55717385 has 16 divisors (see below), whose sum is σ = 72023040. Its totient is φ = 41257920.

The previous prime is 55717373. The next prime is 55717393. The reversal of 55717385 is 58371755.

It is not a de Polignac number, because 55717385 - 2⁴ = 55717369 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4250 + ... + 11379.

It is an arithmetic number, because the mean of its divisors is an integer number (4501440).

Almost surely, 2^55717385 is an apocalyptic number.

It is an amenable number.

55717385 is a deficient number, since it is larger than the sum of its proper divisors (16305655).

55717385 is a wasteful number, since it uses less digits than its factorization.

55717385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15688.

The product of its digits is 147000, while the sum is 41.

The square root of 55717385 is about 7464.4078800666. The cubic root of 55717385 is about 381.9415519614.

The spelling of 55717385 in words is "fifty-five million, seven hundred seventeen thousand, three hundred eighty-five".