56557277 has 8 divisors (see below), whose sum is σ = 64923456. Its totient is φ = 48262752.

The previous prime is 56557247. The next prime is 56557289. The reversal of 56557277 is 77275565.

It is a happy number.

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 56557277 - 2⁶ = 56557213 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 (56557217) 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, 16208 + ... + 19385.

It is an arithmetic number, because the mean of its divisors is an integer number (8115432).

Almost surely, 2^56557277 is an apocalyptic number.

It is an amenable number.

56557277 is a deficient number, since it is larger than the sum of its proper divisors (8366179).

56557277 is a wasteful number, since it uses less digits than its factorization.

56557277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35827.

The product of its digits is 514500, while the sum is 44.

The square root of 56557277 is about 7520.4572334400. The cubic root of 56557277 is about 383.8511363266.

The spelling of 56557277 in words is "fifty-six million, five hundred fifty-seven thousand, two hundred seventy-seven".