55264431 has 16 divisors (see below), whose sum is σ = 75321344. Its totient is φ = 36033984.

The previous prime is 55264409. The next prime is 55264439. The reversal of 55264431 is 13446255.

It is not a de Polignac number, because 55264431 - 2⁶ = 55264367 is a prime.

It is a super-2 number, since 2×55264431² = 6108314667507522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55264439) 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, 26820 + ... + 28806.

It is an arithmetic number, because the mean of its divisors is an integer number (4707584).

Almost surely, 2^55264431 is an apocalyptic number.

55264431 is the 3974-th nonagonal number.

55264431 is a deficient number, since it is larger than the sum of its proper divisors (20056913).

55264431 is a wasteful number, since it uses less digits than its factorization.

55264431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2190.

The product of its digits is 14400, while the sum is 30.

The square root of 55264431 is about 7434.0050443889. The cubic root of 55264431 is about 380.9037377105.

The spelling of 55264431 in words is "fifty-five million, two hundred sixty-four thousand, four hundred thirty-one".