51615054 has 12 divisors (see below), whose sum is σ = 111832656. Its totient is φ = 17205012.

The previous prime is 51615049. The next prime is 51615061. The reversal of 51615054 is 45051615.

It is a happy number.

51615054 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×51615054² = 5328227598845832, which contains 22 as substring.

It is a Curzon number.

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 5 ways as a sum of consecutive naturals, for example, 1433734 + ... + 1433769.

It is an arithmetic number, because the mean of its divisors is an integer number (9319388).

Almost surely, 2^51615054 is an apocalyptic number.

51615054 is an abundant number, since it is smaller than the sum of its proper divisors (60217602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51615054 is a wasteful number, since it uses less digits than its factorization.

51615054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2867511 (or 2867508 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 51615054 is about 7184.3617670605. The cubic root of 51615054 is about 372.3277981288.

Adding to 51615054 its reverse (45051615), we get a palindrome (96666669).

The spelling of 51615054 in words is "fifty-one million, six hundred fifteen thousand, fifty-four".