51107899 has 4 divisors (see below), whose sum is σ = 54114264. Its totient is φ = 48101536.

The previous prime is 51107893. The next prime is 51107911. The reversal of 51107899 is 99870115.

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 51107899 - 2⁹ = 51107387 is a prime.

It is a super-2 number, since 2×51107899² = 5224034680388402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51107893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1503157 + ... + 1503190.

It is an arithmetic number, because the mean of its divisors is an integer number (13528566).

Almost surely, 2^51107899 is an apocalyptic number.

51107899 is a deficient number, since it is larger than the sum of its proper divisors (3006365).

51107899 is a wasteful number, since it uses less digits than its factorization.

51107899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3006364.

The product of its (nonzero) digits is 22680, while the sum is 40.

The square root of 51107899 is about 7148.9788781336. The cubic root of 51107899 is about 371.1043194169.

The spelling of 51107899 in words is "fifty-one million, one hundred seven thousand, eight hundred ninety-nine".