55367431 has 4 divisors (see below), whose sum is σ = 63277072. Its totient is φ = 47457792.

The previous prime is 55367423. The next prime is 55367447. The reversal of 55367431 is 13476355.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55367431 - 2³ = 55367423 is a prime.

It is a super-2 number, since 2×55367431² = 6131104831079522, 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 (55368431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3954810 + ... + 3954823.

It is an arithmetic number, because the mean of its divisors is an integer number (15819268).

Almost surely, 2^55367431 is an apocalyptic number.

55367431 is a deficient number, since it is larger than the sum of its proper divisors (7909641).

55367431 is an equidigital number, since it uses as much as digits as its factorization.

55367431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7909640.

The product of its digits is 37800, while the sum is 34.

The square root of 55367431 is about 7440.9294446326. The cubic root of 55367431 is about 381.1402294027.

The spelling of 55367431 in words is "fifty-five million, three hundred sixty-seven thousand, four hundred thirty-one".