252151391 has 2 divisors, whose sum is σ = 252151392. Its totient is φ = 252151390.

The previous prime is 252151349. The next prime is 252151399. The reversal of 252151391 is 193151252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 252151391 - 2²⁶ = 185042527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252151399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126075695 + 126075696.

It is an arithmetic number, because the mean of its divisors is an integer number (126075696).

Almost surely, 2^252151391 is an apocalyptic number.

252151391 is a deficient number, since it is larger than the sum of its proper divisors (1).

252151391 is an equidigital number, since it uses as much as digits as its factorization.

252151391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2700, while the sum is 29.

The square root of 252151391 is about 15879.2755187383. The cubic root of 252151391 is about 631.7624212167.

The spelling of 252151391 in words is "two hundred fifty-two million, one hundred fifty-one thousand, three hundred ninety-one".