51036931 has 16 divisors (see below), whose sum is σ = 59067648. Its totient is φ = 43639200.

The previous prime is 51036917. The next prime is 51036959. The reversal of 51036931 is 13963015.

It is not a de Polignac number, because 51036931 - 2⁷ = 51036803 is a prime.

It is a super-2 number, since 2×51036931² = 5209536651797522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51036931.

It is not an unprimeable number, because it can be changed into a prime (51036911) 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, 13780 + ... + 17086.

It is an arithmetic number, because the mean of its divisors is an integer number (3691728).

Almost surely, 2^51036931 is an apocalyptic number.

51036931 is a deficient number, since it is larger than the sum of its proper divisors (8030717).

51036931 is a wasteful number, since it uses less digits than its factorization.

51036931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3402.

The product of its (nonzero) digits is 2430, while the sum is 28.

The square root of 51036931 is about 7144.0136478033. The cubic root of 51036931 is about 370.9324690670.

Adding to 51036931 its reverse (13963015), we get a palindrome (64999946).

The spelling of 51036931 in words is "fifty-one million, thirty-six thousand, nine hundred thirty-one".