51465131 has 8 divisors (see below), whose sum is σ = 52521984. Its totient is φ = 50417640.

The previous prime is 51465121. The next prime is 51465133. The reversal of 51465131 is 13156415.

51465131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51465131 is a prime.

It is a super-2 number, since 2×51465131² = 5297319417694322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51465131.

It is not an unprimeable number, because it can be changed into a prime (51465133) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9350 + ... + 13796.

It is an arithmetic number, because the mean of its divisors is an integer number (6565248).

Almost surely, 2^51465131 is an apocalyptic number.

51465131 is a deficient number, since it is larger than the sum of its proper divisors (1056853).

51465131 is a wasteful number, since it uses less digits than its factorization.

51465131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4681.

The product of its digits is 1800, while the sum is 26.

The square root of 51465131 is about 7173.9201974931. The cubic root of 51465131 is about 371.9669561546.

The spelling of 51465131 in words is "fifty-one million, four hundred sixty-five thousand, one hundred thirty-one".