55655731 has 12 divisors (see below), whose sum is σ = 59186064. Its totient is φ = 52326000.

The previous prime is 55655701. The next prime is 55655749. The reversal of 55655731 is 13755655.

It is a de Polignac number, because none of the positive numbers 2^k-55655731 is a prime.

It is a super-2 number, since 2×55655731² = 6195120786288722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55655701) 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, 54001 + ... + 55021.

It is an arithmetic number, because the mean of its divisors is an integer number (4932172).

Almost surely, 2^55655731 is an apocalyptic number.

55655731 is a deficient number, since it is larger than the sum of its proper divisors (3530333).

55655731 is a wasteful number, since it uses less digits than its factorization.

55655731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210 (or 1191 counting only the distinct ones).

The product of its digits is 78750, while the sum is 37.

The square root of 55655731 is about 7460.2768715377. The cubic root of 55655731 is about 381.8006209903.

The spelling of 55655731 in words is "fifty-five million, six hundred fifty-five thousand, seven hundred thirty-one".