252435739 has 2 divisors, whose sum is σ = 252435740. Its totient is φ = 252435738.

The previous prime is 252435713. The next prime is 252435797. The reversal of 252435739 is 937534252.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 252435739 - 2⁵ = 252435707 is a prime.

It is a super-2 number, since 2×252435739² = 127447604648952242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (252435709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126217869 + 126217870.

It is an arithmetic number, because the mean of its divisors is an integer number (126217870).

Almost surely, 2^252435739 is an apocalyptic number.

252435739 is a deficient number, since it is larger than the sum of its proper divisors (1).

252435739 is an equidigital number, since it uses as much as digits as its factorization.

252435739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 226800, while the sum is 40.

The square root of 252435739 is about 15888.2264271378. The cubic root of 252435739 is about 631.9998088914. Note that the first 3 decimals are identical.

The spelling of 252435739 in words is "two hundred fifty-two million, four hundred thirty-five thousand, seven hundred thirty-nine".