51400131 has 8 divisors (see below), whose sum is σ = 68693520. Its totient is φ = 34186752.

The previous prime is 51400127. The next prime is 51400133. The reversal of 51400131 is 13100415.

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

It is not a de Polignac number, because 51400131 - 2² = 51400127 is a prime.

It is a super-2 number, since 2×51400131² = 5283946933634322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51400131.

It is not an unprimeable number, because it can be changed into a prime (51400133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18486 + ... + 21083.

It is an arithmetic number, because the mean of its divisors is an integer number (8586690).

Almost surely, 2^51400131 is an apocalyptic number.

51400131 is a deficient number, since it is larger than the sum of its proper divisors (17293389).

51400131 is a wasteful number, since it uses less digits than its factorization.

51400131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40005.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 51400131 is about 7169.3884676449. The cubic root of 51400131 is about 371.8102932022.

Adding to 51400131 its reverse (13100415), we get a palindrome (64500546).

The spelling of 51400131 in words is "fifty-one million, four hundred thousand, one hundred thirty-one".