252020999 has 2 divisors, whose sum is σ = 252021000. Its totient is φ = 252020998.

The previous prime is 252020947. The next prime is 252021001. The reversal of 252020999 is 999020252.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 252020999 - 2¹² = 252016903 is a prime.

It is a Sophie Germain prime.

Together with 252021001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252020939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126010499 + 126010500.

It is an arithmetic number, because the mean of its divisors is an integer number (126010500).

Almost surely, 2^252020999 is an apocalyptic number.

252020999 is a deficient number, since it is larger than the sum of its proper divisors (1).

252020999 is an equidigital number, since it uses as much as digits as its factorization.

252020999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 252020999 is about 15875.1692589402. The cubic root of 252020999 is about 631.6535038862.

The spelling of 252020999 in words is "two hundred fifty-two million, twenty thousand, nine hundred ninety-nine".