55875731 has 2 divisors, whose sum is σ = 55875732. Its totient is φ = 55875730.

The previous prime is 55875709. The next prime is 55875737. The reversal of 55875731 is 13757855.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55875731 - 2⁶ = 55875667 is a prime.

It is a super-2 number, since 2×55875731² = 6244194629568722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55875737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27937865 + 27937866.

It is an arithmetic number, because the mean of its divisors is an integer number (27937866).

Almost surely, 2^55875731 is an apocalyptic number.

55875731 is a deficient number, since it is larger than the sum of its proper divisors (1).

55875731 is an equidigital number, since it uses as much as digits as its factorization.

55875731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 147000, while the sum is 41.

The square root of 55875731 is about 7475.0070902976. The cubic root of 55875731 is about 382.3030292909.

The spelling of 55875731 in words is "fifty-five million, eight hundred seventy-five thousand, seven hundred thirty-one".