52511515551 has 24 divisors (see below), whose sum is σ = 82786878720. Its totient is φ = 31809214800.

The previous prime is 52511515549. The next prime is 52511515561. The reversal of 52511515551 is 15551511525.

52511515551 is a `hidden beast` number, since 5 + 2 + 51 + 1 + 51 + 5 + 551 = 666.

It is not a de Polignac number, because 52511515551 - 2¹ = 52511515549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52511515561) 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, 67210 + ... + 330968.

It is an arithmetic number, because the mean of its divisors is an integer number (3449453280).

Almost surely, 2^52511515551 is an apocalyptic number.

52511515551 is a deficient number, since it is larger than the sum of its proper divisors (30275363169).

52511515551 is a wasteful number, since it uses less digits than its factorization.

52511515551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265787 (or 265784 counting only the distinct ones).

The product of its digits is 31250, while the sum is 36.

The spelling of 52511515551 in words is "fifty-two billion, five hundred eleven million, five hundred fifteen thousand, five hundred fifty-one".