51401115 has 32 divisors (see below), whose sum is σ = 96759360. Its totient is φ = 25800192.

The previous prime is 51401093. The next prime is 51401123. The reversal of 51401115 is 51110415.

It is a happy number.

It is not a de Polignac number, because 51401115 - 2⁵ = 51401083 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8904 + ... + 13493.

It is an arithmetic number, because the mean of its divisors is an integer number (3023730).

Almost surely, 2^51401115 is an apocalyptic number.

51401115 is a deficient number, since it is larger than the sum of its proper divisors (45358245).

51401115 is a wasteful number, since it uses less digits than its factorization.

51401115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22428 (or 22422 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 51401115 is about 7169.4570924164. The cubic root of 51401115 is about 371.8126658226.

The spelling of 51401115 in words is "fifty-one million, four hundred one thousand, one hundred fifteen".