55742975 has 12 divisors (see below), whose sum is σ = 69236640. Its totient is φ = 44520000.

The previous prime is 55742933. The next prime is 55742993. The reversal of 55742975 is 57924755.

It is not a de Polignac number, because 55742975 - 2⁸ = 55742719 is a prime.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17291 + ... + 20259.

It is an arithmetic number, because the mean of its divisors is an integer number (5769720).

Almost surely, 2^55742975 is an apocalyptic number.

55742975 is a deficient number, since it is larger than the sum of its proper divisors (13493665).

55742975 is a wasteful number, since it uses less digits than its factorization.

55742975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3730 (or 3725 counting only the distinct ones).

The product of its digits is 441000, while the sum is 44.

The square root of 55742975 is about 7466.1218179186. The cubic root of 55742975 is about 382.0000159901. Note that the first 4 decimals are identical.

The spelling of 55742975 in words is "fifty-five million, seven hundred forty-two thousand, nine hundred seventy-five".