252121502423251 has 8 divisors (see below), whose sum is σ = 252566152982000. Its totient is φ = 251676862728480.

The previous prime is 252121502423239. The next prime is 252121502423303. The reversal of 252121502423251 is 152324205121252.

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 252121502423251 - 2³¹ = 252119354939603 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 252121502423251.

It is not an unprimeable number, because it can be changed into a prime (252121502423851) 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, 44461045 + ... + 49809913.

It is an arithmetic number, because the mean of its divisors is an integer number (31570769122750).

Almost surely, 2^{252121502423251} is an apocalyptic number.

252121502423251 is a deficient number, since it is larger than the sum of its proper divisors (444650558749).

252121502423251 is an equidigital number, since it uses as much as digits as its factorization.

252121502423251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5431989.

The product of its (nonzero) digits is 96000, while the sum is 37.

The spelling of 252121502423251 in words is "two hundred fifty-two trillion, one hundred twenty-one billion, five hundred two million, four hundred twenty-three thousand, two hundred fifty-one".