56521055 has 8 divisors (see below), whose sum is σ = 69105312. Its totient is φ = 44363488.

The previous prime is 56521037. The next prime is 56521057. The reversal of 56521055 is 55012565.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56521055 - 2⁸ = 56520799 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 (56521057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106379 + ... + 106908.

It is an arithmetic number, because the mean of its divisors is an integer number (8638164).

Almost surely, 2^56521055 is an apocalyptic number.

56521055 is a deficient number, since it is larger than the sum of its proper divisors (12584257).

56521055 is a wasteful number, since it uses less digits than its factorization.

56521055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213345.

The product of its (nonzero) digits is 7500, while the sum is 29.

The square root of 56521055 is about 7518.0486164962. The cubic root of 56521055 is about 383.7691732508.

The spelling of 56521055 in words is "fifty-six million, five hundred twenty-one thousand, fifty-five".