253542231457 has 4 divisors (see below), whose sum is σ = 253848812976. Its totient is φ = 253235649940.

The previous prime is 253542231433. The next prime is 253542231511. The reversal of 253542231457 is 754132245352.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253542231457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253542231407) 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, 153289519 + ... + 153291172.

It is an arithmetic number, because the mean of its divisors is an integer number (63462203244).

Almost surely, 2^253542231457 is an apocalyptic number.

It is an amenable number.

253542231457 is a deficient number, since it is larger than the sum of its proper divisors (306581519).

253542231457 is an equidigital number, since it uses as much as digits as its factorization.

253542231457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306581518.

The product of its digits is 1008000, while the sum is 43.

The spelling of 253542231457 in words is "two hundred fifty-three billion, five hundred forty-two million, two hundred thirty-one thousand, four hundred fifty-seven".