252151243 has 2 divisors, whose sum is σ = 252151244. Its totient is φ = 252151242.

The previous prime is 252151199. The next prime is 252151253. The reversal of 252151243 is 342151252.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252151243 is a prime.

It is not a weakly prime, because it can be changed into another prime (252151253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126075621 + 126075622.

It is an arithmetic number, because the mean of its divisors is an integer number (126075622).

Almost surely, 2^252151243 is an apocalyptic number.

252151243 is a deficient number, since it is larger than the sum of its proper divisors (1).

252151243 is an equidigital number, since it uses as much as digits as its factorization.

252151243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2400, while the sum is 25.

The square root of 252151243 is about 15879.2708585753. The cubic root of 252151243 is about 631.7622976126.

Subtracting 252151243 from its reverse (342151252), we obtain a palindrome (90000009).

The spelling of 252151243 in words is "two hundred fifty-two million, one hundred fifty-one thousand, two hundred forty-three".