51131162254 has 16 divisors (see below), whose sum is σ = 79426947600. Its totient is φ = 24657412864.

The previous prime is 51131162239. The next prime is 51131162267. The reversal of 51131162254 is 45226113115.

It is a super-2 number, since 2×51131162254² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 420592 + ... + 528355.

It is an arithmetic number, because the mean of its divisors is an integer number (4964184225).

Almost surely, 2^51131162254 is an apocalyptic number.

51131162254 is a deficient number, since it is larger than the sum of its proper divisors (28295785346).

51131162254 is a wasteful number, since it uses less digits than its factorization.

51131162254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949907.

The product of its digits is 7200, while the sum is 31.

Adding to 51131162254 its reverse (45226113115), we get a palindrome (96357275369).

The spelling of 51131162254 in words is "fifty-one billion, one hundred thirty-one million, one hundred sixty-two thousand, two hundred fifty-four".