51455415 has 32 divisors (see below), whose sum is σ = 90326016. Its totient is φ = 24805760.

The previous prime is 51455399. The next prime is 51455423.

51455415 is nontrivially palindromic in base 10.

51455415 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 51455415 - 2⁴ = 51455399 is a prime.

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 31 ways as a sum of consecutive naturals, for example, 31714 + ... + 33296.

It is an arithmetic number, because the mean of its divisors is an integer number (2822688).

Almost surely, 2^51455415 is an apocalyptic number.

51455415 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51455415 is a deficient number, since it is larger than the sum of its proper divisors (38870601).

51455415 is a wasteful number, since it uses less digits than its factorization.

51455415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1799.

The product of its digits is 10000, while the sum is 30.

The square root of 51455415 is about 7173.2429904472. The cubic root of 51455415 is about 371.9435470468.

The spelling of 51455415 in words is "fifty-one million, four hundred fifty-five thousand, four hundred fifteen".