51102354131 has 4 divisors (see below), whose sum is σ = 51160624512. Its totient is φ = 51044083752.

The previous prime is 51102354119. The next prime is 51102354139. The reversal of 51102354131 is 13145320115.

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 51102354131 - 2³⁰ = 50028612307 is a prime.

It is a super-2 number, since 2×51102354131² (a number of 22 digits) 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 51102354131.

It is not an unprimeable number, because it can be changed into a prime (51102354139) 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, 29133875 + ... + 29135628.

It is an arithmetic number, because the mean of its divisors is an integer number (12790156128).

Almost surely, 2^51102354131 is an apocalyptic number.

51102354131 is a deficient number, since it is larger than the sum of its proper divisors (58270381).

51102354131 is an equidigital number, since it uses as much as digits as its factorization.

51102354131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58270380.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 51102354131 its reverse (13145320115), we get a palindrome (64247674246).

The spelling of 51102354131 in words is "fifty-one billion, one hundred two million, three hundred fifty-four thousand, one hundred thirty-one".