56657553 has 8 divisors (see below), whose sum is σ = 77980416. Its totient is φ = 36553200.

The previous prime is 56657551. The next prime is 56657567. The reversal of 56657553 is 35575665.

It is a happy number.

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

It is not a de Polignac number, because 56657553 - 2¹ = 56657551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56657551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304518 + ... + 304703.

It is an arithmetic number, because the mean of its divisors is an integer number (9747552).

Almost surely, 2^56657553 is an apocalyptic number.

It is an amenable number.

56657553 is a deficient number, since it is larger than the sum of its proper divisors (21322863).

56657553 is a wasteful number, since it uses less digits than its factorization.

56657553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609255.

The product of its digits is 472500, while the sum is 42.

The square root of 56657553 is about 7527.1211628351. The cubic root of 56657553 is about 384.0778582904.

The spelling of 56657553 in words is "fifty-six million, six hundred fifty-seven thousand, five hundred fifty-three".