253242533531 has 8 divisors (see below), whose sum is σ = 274553084400. Its totient is φ = 232193462112.

The previous prime is 253242533527. The next prime is 253242533539. The reversal of 253242533531 is 135335242352.

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

It is a cyclic number.

It is not a de Polignac number, because 253242533531 - 2² = 253242533527 is a prime.

It is a super-2 number, since 2×253242533531² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253242533539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65367845 + ... + 65371718.

It is an arithmetic number, because the mean of its divisors is an integer number (34319135550).

Almost surely, 2^253242533531 is an apocalyptic number.

253242533531 is a deficient number, since it is larger than the sum of its proper divisors (21310550869).

253242533531 is a wasteful number, since it uses less digits than its factorization.

253242533531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130739725.

The product of its digits is 324000, while the sum is 38.

Adding to 253242533531 its reverse (135335242352), we get a palindrome (388577775883).

The spelling of 253242533531 in words is "two hundred fifty-three billion, two hundred forty-two million, five hundred thirty-three thousand, five hundred thirty-one".