51423115 has 4 divisors (see below), whose sum is σ = 61707744. Its totient is φ = 41138488.

The previous prime is 51423109. The next prime is 51423157. The reversal of 51423115 is 51132415.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51423115 - 2¹⁵ = 51390347 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5142307 + ... + 5142316.

It is an arithmetic number, because the mean of its divisors is an integer number (15426936).

Almost surely, 2^51423115 is an apocalyptic number.

51423115 is a deficient number, since it is larger than the sum of its proper divisors (10284629).

51423115 is a wasteful number, since it uses less digits than its factorization.

51423115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10284628.

The product of its digits is 600, while the sum is 22.

The square root of 51423115 is about 7170.9912146090. The cubic root of 51423115 is about 371.8657043083.

The spelling of 51423115 in words is "fifty-one million, four hundred twenty-three thousand, one hundred fifteen".