51124513551 has 16 divisors (see below), whose sum is σ = 71424925440. Its totient is φ = 32465854080.

The previous prime is 51124513543. The next prime is 51124513613. The reversal of 51124513551 is 15531542115.

It is a happy number.

It is not a de Polignac number, because 51124513551 - 2³ = 51124513543 is a prime.

It is a super-2 number, since 2×51124513551² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51124513051) 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 15 ways as a sum of consecutive naturals, for example, 1520581 + ... + 1553838.

It is an arithmetic number, because the mean of its divisors is an integer number (4464057840).

Almost surely, 2^51124513551 is an apocalyptic number.

51124513551 is a deficient number, since it is larger than the sum of its proper divisors (20300411889).

51124513551 is a wasteful number, since it uses less digits than its factorization.

51124513551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3074686.

The product of its digits is 15000, while the sum is 33.

The spelling of 51124513551 in words is "fifty-one billion, one hundred twenty-four million, five hundred thirteen thousand, five hundred fifty-one".