55756757 has 12 divisors (see below), whose sum is σ = 65051136. Its totient is φ = 47650680.

The previous prime is 55756751. The next prime is 55756759. The reversal of 55756757 is 75765755.

It is a de Polignac number, because none of the positive numbers 2^k-55756757 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55756751) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17282 + ... + 20252.

It is an arithmetic number, because the mean of its divisors is an integer number (5420928).

Almost surely, 2^55756757 is an apocalyptic number.

It is an amenable number.

55756757 is a deficient number, since it is larger than the sum of its proper divisors (9294379).

55756757 is a wasteful number, since it uses less digits than its factorization.

55756757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3368 (or 3361 counting only the distinct ones).

The product of its digits is 1286250, while the sum is 47.

The square root of 55756757 is about 7467.0447300120. The cubic root of 55756757 is about 382.0314955346.

The spelling of 55756757 in words is "fifty-five million, seven hundred fifty-six thousand, seven hundred fifty-seven".