55255431 has 16 divisors (see below), whose sum is σ = 91853568. Its totient is φ = 28704000.

The previous prime is 55255429. The next prime is 55255441. The reversal of 55255431 is 13455255.

It is a happy number.

It is not a de Polignac number, because 55255431 - 2¹ = 55255429 is a prime.

It is a super-2 number, since 2×55255431² = 6106325309991522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55255441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119370 + ... + 119831.

It is an arithmetic number, because the mean of its divisors is an integer number (5740848).

Almost surely, 2^55255431 is an apocalyptic number.

55255431 is a deficient number, since it is larger than the sum of its proper divisors (36598137).

55255431 is a wasteful number, since it uses less digits than its factorization.

55255431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239222.

The product of its digits is 15000, while the sum is 30.

The square root of 55255431 is about 7433.3996932763. The cubic root of 55255431 is about 380.8830594328.

The spelling of 55255431 in words is "fifty-five million, two hundred fifty-five thousand, four hundred thirty-one".