51101604131 has 4 divisors (see below), whose sum is σ = 52188872352. Its totient is φ = 50014335912.

The previous prime is 51101604119. The next prime is 51101604163. The reversal of 51101604131 is 13140610115.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51101604131 - 2²² = 51097409827 is a prime.

It is a super-2 number, since 2×51101604131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51101604097 and 51101604106.

It is not an unprimeable number, because it can be changed into a prime (51101604101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 543634040 + ... + 543634133.

It is an arithmetic number, because the mean of its divisors is an integer number (13047218088).

Almost surely, 2^51101604131 is an apocalyptic number.

51101604131 is a deficient number, since it is larger than the sum of its proper divisors (1087268221).

51101604131 is a wasteful number, since it uses less digits than its factorization.

51101604131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087268220.

The product of its (nonzero) digits is 360, while the sum is 23.

The spelling of 51101604131 in words is "fifty-one billion, one hundred one million, six hundred four thousand, one hundred thirty-one".