51512422151 has 4 divisors (see below), whose sum is σ = 53288712600. Its totient is φ = 49736131704.

The previous prime is 51512422139. The next prime is 51512422153. The reversal of 51512422151 is 15122421515.

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 51512422151 - 2¹⁴ = 51512405767 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 1776290419 = 51512422151 / (5 + 1 + 5 + 1 + 2 + 4 + 2 + 2 + 1 + 5 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51512422153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 888145181 + ... + 888145238.

It is an arithmetic number, because the mean of its divisors is an integer number (13322178150).

Almost surely, 2^51512422151 is an apocalyptic number.

51512422151 is a deficient number, since it is larger than the sum of its proper divisors (1776290449).

51512422151 is a wasteful number, since it uses less digits than its factorization.

51512422151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1776290448.

The product of its digits is 4000, while the sum is 29.

Adding to 51512422151 its reverse (15122421515), we get a palindrome (66634843666).

The spelling of 51512422151 in words is "fifty-one billion, five hundred twelve million, four hundred twenty-two thousand, one hundred fifty-one".