51130899 has 8 divisors (see below), whose sum is σ = 75749520. Its totient is φ = 34087248.

The previous prime is 51130897. The next prime is 51130903. The reversal of 51130899 is 99803115.

It is a happy number.

It is not a de Polignac number, because 51130899 - 2¹ = 51130897 is a prime.

It is a super-2 number, since 2×51130899² = 5228737665096402, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51130897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 946842 + ... + 946895.

It is an arithmetic number, because the mean of its divisors is an integer number (9468690).

Almost surely, 2^51130899 is an apocalyptic number.

51130899 is a deficient number, since it is larger than the sum of its proper divisors (24618621).

51130899 is a wasteful number, since it uses less digits than its factorization.

51130899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1893746 (or 1893740 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 51130899 is about 7150.5873185355. The cubic root of 51130899 is about 371.1599802146.

The spelling of 51130899 in words is "fifty-one million, one hundred thirty thousand, eight hundred ninety-nine".