252199999 has 2 divisors, whose sum is σ = 252200000. Its totient is φ = 252199998.

The previous prime is 252199943. The next prime is 252200009. The reversal of 252199999 is 999991252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 252199999 - 2¹¹ = 252197951 is a prime.

252199999 is a modest number, since divided by 99999 gives 2521 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252190999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126099999 + 126100000.

It is an arithmetic number, because the mean of its divisors is an integer number (126100000).

Almost surely, 2^252199999 is an apocalyptic number.

252199999 is a deficient number, since it is larger than the sum of its proper divisors (1).

252199999 is an equidigital number, since it uses as much as digits as its factorization.

252199999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1180980, while the sum is 55.

The square root of 252199999 is about 15880.8059933997. The cubic root of 252199999 is about 631.8030142041.

The spelling of 252199999 in words is "two hundred fifty-two million, one hundred ninety-nine thousand, nine hundred ninety-nine".