55494731 has 2 divisors, whose sum is σ = 55494732. Its totient is φ = 55494730.

The previous prime is 55494707. The next prime is 55494737. The reversal of 55494731 is 13749455.

55494731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55494731 - 2⁶ = 55494667 is a prime.

It is a super-2 number, since 2×55494731² = 6159330337524722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (55494737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27747365 + 27747366.

It is an arithmetic number, because the mean of its divisors is an integer number (27747366).

Almost surely, 2^55494731 is an apocalyptic number.

55494731 is a deficient number, since it is larger than the sum of its proper divisors (1).

55494731 is an equidigital number, since it uses as much as digits as its factorization.

55494731 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 38.

The square root of 55494731 is about 7449.4785723566. The cubic root of 55494731 is about 381.4321098632.

The spelling of 55494731 in words is "fifty-five million, four hundred ninety-four thousand, seven hundred thirty-one".