253266506531 has 4 divisors (see below), whose sum is σ = 253267818864. Its totient is φ = 253265194200.

The previous prime is 253266506509. The next prime is 253266506533. The reversal of 253266506531 is 135605662352.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253266506531 is a prime.

It is a super-2 number, since 2×253266506531² (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 (253266506533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303500 + ... + 773721.

It is an arithmetic number, because the mean of its divisors is an integer number (63316954716).

Almost surely, 2^253266506531 is an apocalyptic number.

253266506531 is a deficient number, since it is larger than the sum of its proper divisors (1312333).

253266506531 is a wasteful number, since it uses less digits than its factorization.

253266506531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312332.

The product of its (nonzero) digits is 972000, while the sum is 44.

The spelling of 253266506531 in words is "two hundred fifty-three billion, two hundred sixty-six million, five hundred six thousand, five hundred thirty-one".