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72527233 = 131553643
BaseRepresentation
bin1000101001010…
…10110110000001
312001110202122211
410110222312001
5122031332413
611110302121
71540320442
oct424526601
9161422584
1072527233
1137a37869
1220357941
1312044c2c
1498bd2c9
15657983d
hex452ad81

72527233 has 4 divisors (see below), whose sum is σ = 73081008. Its totient is φ = 71973460.

The previous prime is 72527209. The next prime is 72527269. The reversal of 72527233 is 33272527.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33272527 = 33479941.

It is a cyclic number.

It is not a de Polignac number, because 72527233 - 25 = 72527201 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72527195 and 72527204.

It is not an unprimeable number, because it can be changed into a prime (72524233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 276691 + ... + 276952.

It is an arithmetic number, because the mean of its divisors is an integer number (18270252).

Almost surely, 272527233 is an apocalyptic number.

It is an amenable number.

72527233 is a deficient number, since it is larger than the sum of its proper divisors (553775).

72527233 is a wasteful number, since it uses less digits than its factorization.

72527233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553774.

The product of its digits is 17640, while the sum is 31.

The square root of 72527233 is about 8516.2922096415. The cubic root of 72527233 is about 417.0297486574.

The spelling of 72527233 in words is "seventy-two million, five hundred twenty-seven thousand, two hundred thirty-three".

Divisors: 1 131 553643 72527233