56555031 has 32 divisors (see below), whose sum is σ = 84192192. Its totient is φ = 33546240.

The previous prime is 56555029. The next prime is 56555033. The reversal of 56555031 is 13055565.

It is an interprime number because it is at equal distance from previous prime (56555029) and next prime (56555033).

It is not a de Polignac number, because 56555031 - 2¹ = 56555029 is a prime.

It is a super-2 number, since 2×56555031² = 6396943062821922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 56555031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56555033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 180531 + ... + 180843.

It is an arithmetic number, because the mean of its divisors is an integer number (2631006).

Almost surely, 2^56555031 is an apocalyptic number.

56555031 is a deficient number, since it is larger than the sum of its proper divisors (27637161).

56555031 is a wasteful number, since it uses less digits than its factorization.

56555031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 483.

The product of its (nonzero) digits is 11250, while the sum is 30.

The square root of 56555031 is about 7520.3079059304. The cubic root of 56555031 is about 383.8460550997.

The spelling of 56555031 in words is "fifty-six million, five hundred fifty-five thousand, thirty-one".