253542632531 has 8 divisors (see below), whose sum is σ = 257578251024. Its totient is φ = 249522215040.

The previous prime is 253542632509. The next prime is 253542632611. The reversal of 253542632531 is 135236245352.

It is a happy number.

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 253542632531 - 2⁶ = 253542632467 is a prime.

It is a super-2 number, since 2×253542632531² (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 (253542634531) 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, 3766625 + ... + 3833346.

It is an arithmetic number, because the mean of its divisors is an integer number (32197281378).

Almost surely, 2^253542632531 is an apocalyptic number.

253542632531 is a deficient number, since it is larger than the sum of its proper divisors (4035618493).

253542632531 is an equidigital number, since it uses as much as digits as its factorization.

253542632531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7600501.

The product of its digits is 648000, while the sum is 41.

Adding to 253542632531 its reverse (135236245352), we get a palindrome (388778877883).

The spelling of 253542632531 in words is "two hundred fifty-three billion, five hundred forty-two million, six hundred thirty-two thousand, five hundred thirty-one".