51336131 has 24 divisors (see below), whose sum is σ = 65915136. Its totient is φ = 38841120.

The previous prime is 51336121. The next prime is 51336163. The reversal of 51336131 is 13163315.

51336131 = 75² + 76² + ... + 536².

It is a happy number.

It is not a de Polignac number, because 51336131 - 2²² = 47141827 is a prime.

It is a super-2 number, since 2×51336131² = 5270796692098322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51336097 and 51336106.

It is not an unprimeable number, because it can be changed into a prime (51336121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 105170 + ... + 105656.

It is an arithmetic number, because the mean of its divisors is an integer number (2746464).

Almost surely, 2^51336131 is an apocalyptic number.

51336131 is a deficient number, since it is larger than the sum of its proper divisors (14579005).

51336131 is a wasteful number, since it uses less digits than its factorization.

51336131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579 (or 542 counting only the distinct ones).

The product of its digits is 810, while the sum is 23.

The square root of 51336131 is about 7164.9236562576. The cubic root of 51336131 is about 371.6559113522.

Adding to 51336131 its reverse (13163315), we get a palindrome (64499446).

The spelling of 51336131 in words is "fifty-one million, three hundred thirty-six thousand, one hundred thirty-one".