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531552223 = 2918329387
BaseRepresentation
bin11111101011101…
…101011111011111
31101001012122120101
4133223231133133
52042034132343
6124425001531
716113055636
oct3753553737
91331178511
10531552223
11253058064
1212a0232a7
1386181757
145084a51d
15319ebe4d
hex1faed7df

531552223 has 4 divisors (see below), whose sum is σ = 549881640. Its totient is φ = 513222808.

The previous prime is 531552127. The next prime is 531552239. The reversal of 531552223 is 322255135.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 531552223 - 221 = 529455071 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 531552191 and 531552200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531552253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9164665 + ... + 9164722.

It is an arithmetic number, because the mean of its divisors is an integer number (137470410).

Almost surely, 2531552223 is an apocalyptic number.

531552223 is a deficient number, since it is larger than the sum of its proper divisors (18329417).

531552223 is a wasteful number, since it uses less digits than its factorization.

531552223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18329416.

The product of its digits is 9000, while the sum is 28.

The square root of 531552223 is about 23055.4163484419. The cubic root of 531552223 is about 810.0565031966.

The spelling of 531552223 in words is "five hundred thirty-one million, five hundred fifty-two thousand, two hundred twenty-three".

Divisors: 1 29 18329387 531552223