51755165 has 32 divisors (see below), whose sum is σ = 77967360. Its totient is φ = 32040000.

The previous prime is 51755159. The next prime is 51755177. The reversal of 51755165 is 56155715.

It is not a de Polignac number, because 51755165 - 2⁸ = 51754909 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68540 + ... + 69290.

It is an arithmetic number, because the mean of its divisors is an integer number (2436480).

Almost surely, 2^51755165 is an apocalyptic number.

51755165 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51755165 is a deficient number, since it is larger than the sum of its proper divisors (26212195).

51755165 is a wasteful number, since it uses less digits than its factorization.

51755165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953.

The product of its digits is 26250, while the sum is 35.

The square root of 51755165 is about 7194.1062683283. The cubic root of 51755165 is about 372.6643930034.

The spelling of 51755165 in words is "fifty-one million, seven hundred fifty-five thousand, one hundred sixty-five".