55931445 has 32 divisors (see below), whose sum is σ = 105287040. Its totient is φ = 28074240.

The previous prime is 55931437. The next prime is 55931453. The reversal of 55931445 is 54413955.

It is an interprime number because it is at equal distance from previous prime (55931437) and next prime (55931453).

It is not a de Polignac number, because 55931445 - 2³ = 55931437 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9891 + ... + 14480.

It is an arithmetic number, because the mean of its divisors is an integer number (3290220).

Almost surely, 2^55931445 is an apocalyptic number.

It is an amenable number.

55931445 is a deficient number, since it is larger than the sum of its proper divisors (49355595).

55931445 is a wasteful number, since it uses less digits than its factorization.

55931445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24402 (or 24396 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 55931445 is about 7478.7328472142. The cubic root of 55931445 is about 382.4300525690.

The spelling of 55931445 in words is "fifty-five million, nine hundred thirty-one thousand, four hundred forty-five".