55472931 has 20 divisors (see below), whose sum is σ = 83925600. Its totient is φ = 36509616.

The previous prime is 55472917. The next prime is 55472947. The reversal of 55472931 is 13927455.

55472931 is a `hidden beast` number, since 554 + 72 + 9 + 31 = 666.

It is not a de Polignac number, because 55472931 - 2¹⁴ = 55456547 is a prime.

It is a super-2 number, since 2×55472931² = 6154492147461522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55472971) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2065 + ... + 10733.

It is an arithmetic number, because the mean of its divisors is an integer number (4196280).

Almost surely, 2^55472931 is an apocalyptic number.

55472931 is a deficient number, since it is larger than the sum of its proper divisors (28452669).

55472931 is an equidigital number, since it uses as much as digits as its factorization.

55472931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8760 (or 8751 counting only the distinct ones).

The product of its digits is 37800, while the sum is 36.

The square root of 55472931 is about 7448.0152389747. The cubic root of 55472931 is about 381.3821573188.

The spelling of 55472931 in words is "fifty-five million, four hundred seventy-two thousand, nine hundred thirty-one".