51073899 has 16 divisors (see below), whose sum is σ = 73185408. Its totient is φ = 31565952.

The previous prime is 51073879. The next prime is 51073907. The reversal of 51073899 is 99837015.

It is a happy number.

It is not a de Polignac number, because 51073899 - 2⁸ = 51073643 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51073899.

It is not an unprimeable number, because it can be changed into a prime (51073879) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4057 + ... + 10890.

It is an arithmetic number, because the mean of its divisors is an integer number (4574088).

Almost surely, 2^51073899 is an apocalyptic number.

51073899 is a deficient number, since it is larger than the sum of its proper divisors (22111509).

51073899 is a wasteful number, since it uses less digits than its factorization.

51073899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15034.

The product of its (nonzero) digits is 68040, while the sum is 42.

The square root of 51073899 is about 7146.6005205272. The cubic root of 51073899 is about 371.0220076405.

The spelling of 51073899 in words is "fifty-one million, seventy-three thousand, eight hundred ninety-nine".