55520523 has 12 divisors (see below), whose sum is σ = 80397720. Its totient is φ = 36920736.

The previous prime is 55520513. The next prime is 55520537. The reversal of 55520523 is 32502555.

It is a de Polignac number, because none of the positive numbers 2^k-55520523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55520513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3861 + ... + 11222.

It is an arithmetic number, because the mean of its divisors is an integer number (6699810).

Almost surely, 2^55520523 is an apocalyptic number.

55520523 is a deficient number, since it is larger than the sum of its proper divisors (24877197).

55520523 is a wasteful number, since it uses less digits than its factorization.

55520523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15498 (or 15495 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 27.

The square root of 55520523 is about 7451.2094991350. The cubic root of 55520523 is about 381.4911927893.

The spelling of 55520523 in words is "fifty-five million, five hundred twenty thousand, five hundred twenty-three".