252199139 has 2 divisors, whose sum is σ = 252199140. Its totient is φ = 252199138.

The previous prime is 252199111. The next prime is 252199151. The reversal of 252199139 is 931991252.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 252199139 - 2¹⁶ = 252133603 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 252199096 and 252199105.

It is not a weakly prime, because it can be changed into another prime (252199169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126099569 + 126099570.

It is an arithmetic number, because the mean of its divisors is an integer number (126099570).

Almost surely, 2^252199139 is an apocalyptic number.

252199139 is a deficient number, since it is larger than the sum of its proper divisors (1).

252199139 is an equidigital number, since it uses as much as digits as its factorization.

252199139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43740, while the sum is 41.

The square root of 252199139 is about 15880.7789166653. The cubic root of 252199139 is about 631.8022960555.

The spelling of 252199139 in words is "two hundred fifty-two million, one hundred ninety-nine thousand, one hundred thirty-nine".