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47472653 = 172792509
BaseRepresentation
bin1011010100011…
…0000000001101
310022022212020102
42311012000031
544123111103
64413300445
71114340144
oct265060015
9108285212
1047472653
11248849a8
1213a94725
139ab1c37
14643a75b
15427ae88
hex2d4600d

47472653 has 4 divisors (see below), whose sum is σ = 50265180. Its totient is φ = 44680128.

The previous prime is 47472631. The next prime is 47472671. The reversal of 47472653 is 35627474.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35627474 = 217813737.

It can be written as a sum of positive squares in 2 ways, for example, as 19731364 + 27741289 = 4442^2 + 5267^2 .

It is a cyclic number.

It is not a de Polignac number, because 47472653 - 212 = 47468557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47472613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1396238 + ... + 1396271.

It is an arithmetic number, because the mean of its divisors is an integer number (12566295).

Almost surely, 247472653 is an apocalyptic number.

It is an amenable number.

47472653 is a deficient number, since it is larger than the sum of its proper divisors (2792527).

47472653 is a wasteful number, since it uses less digits than its factorization.

47472653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2792526.

The product of its digits is 141120, while the sum is 38.

The square root of 47472653 is about 6890.0401305072. The cubic root of 47472653 is about 362.0883075670.

The spelling of 47472653 in words is "forty-seven million, four hundred seventy-two thousand, six hundred fifty-three".

Divisors: 1 17 2792509 47472653