51436131 has 8 divisors (see below), whose sum is σ = 69188880. Its totient is φ = 33987072.

The previous prime is 51436123. The next prime is 51436153. The reversal of 51436131 is 13163415.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51436131 - 2³ = 51436123 is a prime.

It is a super-2 number, since 2×51436131² = 5291351144498322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51436331) 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, 75526 + ... + 76203.

It is an arithmetic number, because the mean of its divisors is an integer number (8648610).

Almost surely, 2^51436131 is an apocalyptic number.

51436131 is a deficient number, since it is larger than the sum of its proper divisors (17752749).

51436131 is a wasteful number, since it uses less digits than its factorization.

51436131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151845.

The product of its digits is 1080, while the sum is 24.

The square root of 51436131 is about 7171.8987025752. The cubic root of 51436131 is about 371.8970766829.

Adding to 51436131 its reverse (13163415), we get a palindrome (64599546).

The spelling of 51436131 in words is "fifty-one million, four hundred thirty-six thousand, one hundred thirty-one".