55931842 has 12 divisors (see below), whose sum is σ = 84992166. Its totient is φ = 27605760.

The previous prime is 55931803. The next prime is 55931857. The reversal of 55931842 is 24813955.

It can be written as a sum of positive squares in only one way, i.e., 40947201 + 14984641 = 6399^2 + 3871^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10242 + ... + 14722.

Almost surely, 2^55931842 is an apocalyptic number.

55931842 is a deficient number, since it is larger than the sum of its proper divisors (29060324).

55931842 is an equidigital number, since it uses as much as digits as its factorization.

55931842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4641 (or 4562 counting only the distinct ones).

The product of its digits is 43200, while the sum is 37.

The square root of 55931842 is about 7478.7593890966. The cubic root of 55931842 is about 382.4309573932.

The spelling of 55931842 in words is "fifty-five million, nine hundred thirty-one thousand, eight hundred forty-two".