252591538631 has 8 divisors (see below), whose sum is σ = 254713772544. Its totient is φ = 250471388160.

The previous prime is 252591538609. The next prime is 252591538637. The reversal of 252591538631 is 136835195252.

252591538631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252591538631 is a prime.

It is a super-2 number, since 2×252591538631² (a number of 24 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 252591538631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252591538637) 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 7 ways as a sum of consecutive naturals, for example, 276890 + ... + 762791.

It is an arithmetic number, because the mean of its divisors is an integer number (31839221568).

Almost surely, 2^252591538631 is an apocalyptic number.

252591538631 is a deficient number, since it is larger than the sum of its proper divisors (2122233913).

252591538631 is a wasteful number, since it uses less digits than its factorization.

252591538631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041721.

The product of its digits is 1944000, while the sum is 50.

The spelling of 252591538631 in words is "two hundred fifty-two billion, five hundred ninety-one million, five hundred thirty-eight thousand, six hundred thirty-one".