52511131531 has 4 divisors (see below), whose sum is σ = 52598505064. Its totient is φ = 52423758000.

The previous prime is 52511131529. The next prime is 52511131637. The reversal of 52511131531 is 13513111525.

52511131531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 52511131531 - 2¹ = 52511131529 is a prime.

It is a super-2 number, since 2×52511131531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52511131531.

It is not an unprimeable number, because it can be changed into a prime (52511131501) 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, 43685865 + ... + 43687066.

It is an arithmetic number, because the mean of its divisors is an integer number (13149626266).

Almost surely, 2^52511131531 is an apocalyptic number.

52511131531 is a deficient number, since it is larger than the sum of its proper divisors (87373533).

52511131531 is an equidigital number, since it uses as much as digits as its factorization.

52511131531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87373532.

The product of its digits is 2250, while the sum is 28.

The spelling of 52511131531 in words is "fifty-two billion, five hundred eleven million, one hundred thirty-one thousand, five hundred thirty-one".