55751517 has 32 divisors (see below), whose sum is σ = 91272960. Its totient is φ = 33454080.

The previous prime is 55751497. The next prime is 55751533. The reversal of 55751517 is 71515755.

55751517 is a `hidden beast` number, since 557 + 51 + 51 + 7 = 666.

It is not a de Polignac number, because 55751517 - 2⁸ = 55751261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55751317) 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, 7917 + ... + 13197.

It is an arithmetic number, because the mean of its divisors is an integer number (2852280).

Almost surely, 2^55751517 is an apocalyptic number.

It is an amenable number.

55751517 is a deficient number, since it is larger than the sum of its proper divisors (35521443).

55751517 is a wasteful number, since it uses less digits than its factorization.

55751517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5330 (or 5324 counting only the distinct ones).

The product of its digits is 30625, while the sum is 36.

The square root of 55751517 is about 7466.6938466767. The cubic root of 55751517 is about 382.0195274321.

The spelling of 55751517 in words is "fifty-five million, seven hundred fifty-one thousand, five hundred seventeen".