55407051 has 32 divisors (see below), whose sum is σ = 95155200. Its totient is φ = 31207680.

The previous prime is 55407043. The next prime is 55407067. The reversal of 55407051 is 15070455.

55407051 is a `hidden beast` number, since 5 + 540 + 70 + 51 = 666.

It is not a de Polignac number, because 55407051 - 2³ = 55407043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (55407041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11355 + ... + 15483.

It is an arithmetic number, because the mean of its divisors is an integer number (2973600).

Almost surely, 2^55407051 is an apocalyptic number.

55407051 is a deficient number, since it is larger than the sum of its proper divisors (39748149).

55407051 is a wasteful number, since it uses less digits than its factorization.

55407051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4216 (or 4210 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 55407051 is about 7443.5912703479. The cubic root of 55407051 is about 381.2311202332.

The spelling of 55407051 in words is "fifty-five million, four hundred seven thousand, fifty-one".