252520031 has 2 divisors, whose sum is σ = 252520032. Its totient is φ = 252520030.

The previous prime is 252520001. The next prime is 252520039. The reversal of 252520031 is 130025252.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252520031 is a prime.

It is a super-2 number, since 2×252520031² = 127532732112481922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 252519985 and 252520012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252520039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126260015 + 126260016.

It is an arithmetic number, because the mean of its divisors is an integer number (126260016).

Almost surely, 2^252520031 is an apocalyptic number.

252520031 is a deficient number, since it is larger than the sum of its proper divisors (1).

252520031 is an equidigital number, since it uses as much as digits as its factorization.

252520031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 252520031 is about 15890.8788617873. The cubic root of 252520031 is about 632.0701457353.

Adding to 252520031 its reverse (130025252), we get a palindrome (382545283).

The spelling of 252520031 in words is "two hundred fifty-two million, five hundred twenty thousand, thirty-one".