55567431 has 16 divisors (see below), whose sum is σ = 82572000. Its totient is φ = 36932544.

The previous prime is 55567403. The next prime is 55567487. The reversal of 55567431 is 13476555.

55567431 is a `hidden beast` number, since 5 + 556 + 74 + 31 = 666.

It is not a de Polignac number, because 55567431 - 2¹⁸ = 55305287 is a prime.

It is a super-2 number, since 2×55567431² = 6175478775879522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55562431) 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, 6475 + ... + 12371.

It is an arithmetic number, because the mean of its divisors is an integer number (5160750).

Almost surely, 2^55567431 is an apocalyptic number.

55567431 is a deficient number, since it is larger than the sum of its proper divisors (27004569).

55567431 is a wasteful number, since it uses less digits than its factorization.

55567431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6255 (or 6249 counting only the distinct ones).

The product of its digits is 63000, while the sum is 36.

The square root of 55567431 is about 7454.3565114636. The cubic root of 55567431 is about 381.5986002282.

The spelling of 55567431 in words is "fifty-five million, five hundred sixty-seven thousand, four hundred thirty-one".