252414550723921 has 4 divisors (see below), whose sum is σ = 258571003180644. Its totient is φ = 246258098267200.

The previous prime is 252414550723913. The next prime is 252414550723943. The reversal of 252414550723921 is 129327055414252.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7509578410321 + 244904972313600 = 2740361^2 + 15649440^2 .

It is a cyclic number.

It is not a de Polignac number, because 252414550723921 - 2³ = 252414550723913 is a prime.

It is a super-2 number, since 2×252414550723921² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252414550723981) 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, 3078226228300 + ... + 3078226228381.

It is an arithmetic number, because the mean of its divisors is an integer number (64642750795161).

Almost surely, 2^{252414550723921} is an apocalyptic number.

It is an amenable number.

252414550723921 is a deficient number, since it is larger than the sum of its proper divisors (6156452456723).

252414550723921 is an equidigital number, since it uses as much as digits as its factorization.

252414550723921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6156452456722.

The product of its (nonzero) digits is 6048000, while the sum is 52.

The spelling of 252414550723921 in words is "two hundred fifty-two trillion, four hundred fourteen billion, five hundred fifty million, seven hundred twenty-three thousand, nine hundred twenty-one".