51131799 has 6 divisors (see below), whose sum is σ = 73857056. Its totient is φ = 34087860.

The previous prime is 51131777. The next prime is 51131837. The reversal of 51131799 is 99713115.

51131799 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 51131799 - 2⁸ = 51131543 is a prime.

It is a super-2 number, since 2×51131799² = 5228921737952802, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51131719) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 2840647 + ... + 2840664.

Almost surely, 2^51131799 is an apocalyptic number.

51131799 is a deficient number, since it is larger than the sum of its proper divisors (22725257).

51131799 is a wasteful number, since it uses less digits than its factorization.

51131799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5681317 (or 5681314 counting only the distinct ones).

The product of its digits is 8505, while the sum is 36.

The square root of 51131799 is about 7150.6502501521. The cubic root of 51131799 is about 371.1621579064.

The spelling of 51131799 in words is "fifty-one million, one hundred thirty-one thousand, seven hundred ninety-nine".