5120531512551 has 24 divisors (see below), whose sum is σ = 9103167134880. Its totient is φ = 2700939698496.

The previous prime is 5120531512543. The next prime is 5120531512567. The reversal of 5120531512551 is 1552151350215.

5120531512551 is a `hidden beast` number, since 5 + 1 + 2 + 0 + 53 + 1 + 51 + 2 + 551 = 666.

It is not a de Polignac number, because 5120531512551 - 2³ = 5120531512543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5120531512511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3126086796 + ... + 3126088433.

It is an arithmetic number, because the mean of its divisors is an integer number (379298630620).

Almost surely, 2^{5120531512551} is an apocalyptic number.

5120531512551 is a deficient number, since it is larger than the sum of its proper divisors (3982635622329).

5120531512551 is a wasteful number, since it uses less digits than its factorization.

5120531512551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6252175255 (or 6252175252 counting only the distinct ones).

The product of its (nonzero) digits is 37500, while the sum is 36.

Adding to 5120531512551 its reverse (1552151350215), we get a palindrome (6672682862766).

The spelling of 5120531512551 in words is "five trillion, one hundred twenty billion, five hundred thirty-one million, five hundred twelve thousand, five hundred fifty-one".