252197737541 has 4 divisors (see below), whose sum is σ = 252232718784. Its totient is φ = 252162756300.

The previous prime is 252197737513. The next prime is 252197737549. The reversal of 252197737541 is 145737791252.

It is a happy number.

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 not a de Polignac number, because 252197737541 - 2²⁶ = 252130628677 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252197737549) 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, 17479805 + ... + 17494226.

It is an arithmetic number, because the mean of its divisors is an integer number (63058179696).

Almost surely, 2^252197737541 is an apocalyptic number.

It is an amenable number.

252197737541 is a deficient number, since it is larger than the sum of its proper divisors (34981243).

252197737541 is an equidigital number, since it uses as much as digits as its factorization.

252197737541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34981242.

The product of its digits is 3704400, while the sum is 53.

The spelling of 252197737541 in words is "two hundred fifty-two billion, one hundred ninety-seven million, seven hundred thirty-seven thousand, five hundred forty-one".