51777131 has 16 divisors (see below), whose sum is σ = 61219584. Its totient is φ = 42872544.

The previous prime is 51777119. The next prime is 51777133. The reversal of 51777131 is 13177715.

51777131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 51777131 - 2¹⁸ = 51514987 is a prime.

It is a super-2 number, since 2×51777131² = 5361742589182322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51777133) 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 15 ways as a sum of consecutive naturals, for example, 23816 + ... + 25898.

It is an arithmetic number, because the mean of its divisors is an integer number (3826224).

Almost surely, 2^51777131 is an apocalyptic number.

51777131 is a deficient number, since it is larger than the sum of its proper divisors (9442453).

51777131 is a wasteful number, since it uses less digits than its factorization.

51777131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2210.

The product of its digits is 5145, while the sum is 32.

The square root of 51777131 is about 7195.6327727310. The cubic root of 51777131 is about 372.7171077952.

The spelling of 51777131 in words is "fifty-one million, seven hundred seventy-seven thousand, one hundred thirty-one".