55957047 has 24 divisors (see below), whose sum is σ = 79883856. Its totient is φ = 34833408.

The previous prime is 55957039. The next prime is 55957049. The reversal of 55957047 is 74075955.

It is not a de Polignac number, because 55957047 - 2³ = 55957039 is a prime.

It is a super-2 number, since 2×55957047² = 6262382217920418, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55957049) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 201873 + ... + 202149.

It is an arithmetic number, because the mean of its divisors is an integer number (3328494).

Almost surely, 2^55957047 is an apocalyptic number.

55957047 is a deficient number, since it is larger than the sum of its proper divisors (23926809).

55957047 is a wasteful number, since it uses less digits than its factorization.

55957047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547 (or 530 counting only the distinct ones).

The product of its (nonzero) digits is 220500, while the sum is 42.

The square root of 55957047 is about 7480.4443049862. Note that the first 3 decimals coincide. The cubic root of 55957047 is about 382.4883947096.

The spelling of 55957047 in words is "fifty-five million, nine hundred fifty-seven thousand, forty-seven".