51431103522 has 16 divisors (see below), whose sum is σ = 114291341280. Its totient is φ = 17143701156.

The previous prime is 51431103431. The next prime is 51431103613. The reversal of 51431103522 is 22530113415.

51431103522 is a `hidden beast` number, since 5 + 1 + 4 + 31 + 103 + 522 = 666.

It is an interprime number because it is at equal distance from previous prime (51431103431) and next prime (51431103613).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 476213868 + ... + 476213975.

It is an arithmetic number, because the mean of its divisors is an integer number (7143208830).

Almost surely, 2^51431103522 is an apocalyptic number.

51431103522 is an abundant number, since it is smaller than the sum of its proper divisors (62860237758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51431103522 is a wasteful number, since it uses less digits than its factorization.

51431103522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952427854 (or 952427848 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 51431103522 its reverse (22530113415), we get a palindrome (73961216937).

The spelling of 51431103522 in words is "fifty-one billion, four hundred thirty-one million, one hundred three thousand, five hundred twenty-two".