55631473 has 2 divisors, whose sum is σ = 55631474. Its totient is φ = 55631472.

The previous prime is 55631447. The next prime is 55631479. The reversal of 55631473 is 37413655.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44395569 + 11235904 = 6663^2 + 3352^2 .

It is a cyclic number.

It is not a de Polignac number, because 55631473 - 2⁵ = 55631441 is a prime.

It is not a weakly prime, because it can be changed into another prime (55631479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27815736 + 27815737.

It is an arithmetic number, because the mean of its divisors is an integer number (27815737).

Almost surely, 2^55631473 is an apocalyptic number.

It is an amenable number.

55631473 is a deficient number, since it is larger than the sum of its proper divisors (1).

55631473 is an equidigital number, since it uses as much as digits as its factorization.

55631473 is an evil number, because the sum of its binary digits is even.

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

The square root of 55631473 is about 7458.6508833703. The cubic root of 55631473 is about 381.7451426342.

The spelling of 55631473 in words is "fifty-five million, six hundred thirty-one thousand, four hundred seventy-three".