56677551 has 16 divisors (see below), whose sum is σ = 90912000. Its totient is φ = 30682368.

The previous prime is 56677549. The next prime is 56677553. The reversal of 56677551 is 15577665.

It is an interprime number because it is at equal distance from previous prime (56677549) and next prime (56677553).

It is not a de Polignac number, because 56677551 - 2¹ = 56677549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56677553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70626 + ... + 71423.

It is an arithmetic number, because the mean of its divisors is an integer number (5682000).

Almost surely, 2^56677551 is an apocalyptic number.

56677551 is a deficient number, since it is larger than the sum of its proper divisors (34234449).

56677551 is a wasteful number, since it uses less digits than its factorization.

56677551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142078.

The product of its digits is 220500, while the sum is 42.

The square root of 56677551 is about 7528.4494419502. The cubic root of 56677551 is about 384.1230413543.

The spelling of 56677551 in words is "fifty-six million, six hundred seventy-seven thousand, five hundred fifty-one".