252121523 has 2 divisors, whose sum is σ = 252121524. Its totient is φ = 252121522.

The previous prime is 252121501. The next prime is 252121537. The reversal of 252121523 is 325121252.

252121523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 252121523 - 2⁶ = 252121459 is a prime.

It is not a weakly prime, because it can be changed into another prime (252121823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126060761 + 126060762.

It is an arithmetic number, because the mean of its divisors is an integer number (126060762).

Almost surely, 2^252121523 is an apocalyptic number.

252121523 is a deficient number, since it is larger than the sum of its proper divisors (1).

252121523 is an equidigital number, since it uses as much as digits as its factorization.

252121523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1200, while the sum is 23.

The square root of 252121523 is about 15878.3350197683. The cubic root of 252121523 is about 631.7374755878.

Adding to 252121523 its reverse (325121252), we get a palindrome (577242775).

The spelling of 252121523 in words is "two hundred fifty-two million, one hundred twenty-one thousand, five hundred twenty-three".