51250165 has 16 divisors (see below), whose sum is σ = 62472960. Its totient is φ = 40357440.

The previous prime is 51250159. The next prime is 51250181. The reversal of 51250165 is 56105215.

51250165 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51250165 - 2²³ = 42861557 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147522 + ... + 147868.

It is an arithmetic number, because the mean of its divisors is an integer number (3904560).

Almost surely, 2^51250165 is an apocalyptic number.

It is an amenable number.

51250165 is a deficient number, since it is larger than the sum of its proper divisors (11222795).

51250165 is a wasteful number, since it uses less digits than its factorization.

51250165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732.

The product of its (nonzero) digits is 1500, while the sum is 25.

The square root of 51250165 is about 7158.9220557288. The cubic root of 51250165 is about 371.4483406990.

It can be divided in two parts, 51250 and 165, that added together give a palindrome (51415).

The spelling of 51250165 in words is "fifty-one million, two hundred fifty thousand, one hundred sixty-five".