51615146 has 16 divisors (see below), whose sum is σ = 86522688. Its totient is φ = 22888800.

The previous prime is 51615143. The next prime is 51615149. The reversal of 51615146 is 64151615.

51615146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51615143) and next prime (51615149).

It is not an unprimeable number, because it can be changed into a prime (51615143) 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, 27710 + ... + 29513.

It is an arithmetic number, because the mean of its divisors is an integer number (5407668).

Almost surely, 2^51615146 is an apocalyptic number.

51615146 is a deficient number, since it is larger than the sum of its proper divisors (34907542).

51615146 is a wasteful number, since it uses less digits than its factorization.

51615146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57277.

The product of its digits is 3600, while the sum is 29.

The square root of 51615146 is about 7184.3681698532. The cubic root of 51615146 is about 372.3280193442.

The spelling of 51615146 in words is "fifty-one million, six hundred fifteen thousand, one hundred forty-six".