55656760 has 16 divisors (see below), whose sum is σ = 125227800. Its totient is φ = 22262688.

The previous prime is 55656751. The next prime is 55656763. The reversal of 55656760 is 6765655.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 1391419 = 55656760 / (5 + 5 + 6 + 5 + 6 + 7 + 6 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55656763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 695670 + ... + 695749.

Almost surely, 2^55656760 is an apocalyptic number.

It is an amenable number.

55656760 is an abundant number, since it is smaller than the sum of its proper divisors (69571040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55656760 is a wasteful number, since it uses less digits than its factorization.

55656760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391430 (or 1391426 counting only the distinct ones).

The product of its (nonzero) digits is 189000, while the sum is 40.

The square root of 55656760 is about 7460.3458364877. The cubic root of 55656760 is about 381.8029739700.

The spelling of 55656760 in words is "fifty-five million, six hundred fifty-six thousand, seven hundred sixty".