51497875 has 64 divisors (see below), whose sum is σ = 78414336. Its totient is φ = 33264000.

The previous prime is 51497869. The next prime is 51497891. The reversal of 51497875 is 57879415.

It is a happy number.

51497875 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 51497875 - 2³ = 51497867 is a prime.

It is a super-2 number, since 2×51497875² = 5304062259031250, which contains 22 as substring.

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 63 ways as a sum of consecutive naturals, for example, 768592 + ... + 768658.

It is an arithmetic number, because the mean of its divisors is an integer number (1225224).

Almost surely, 2^51497875 is an apocalyptic number.

51497875 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51497875 is a deficient number, since it is larger than the sum of its proper divisors (26916461).

51497875 is a wasteful number, since it uses less digits than its factorization.

51497875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 139 counting only the distinct ones).

The product of its digits is 352800, while the sum is 46.

The square root of 51497875 is about 7176.2019899108. The cubic root of 51497875 is about 372.0458257609.

It can be divided in two parts, 514 and 97875, that added together give a palindrome (98389).

The spelling of 51497875 in words is "fifty-one million, four hundred ninety-seven thousand, eight hundred seventy-five".