252417839 has 2 divisors, whose sum is σ = 252417840. Its totient is φ = 252417838.

The previous prime is 252417757. The next prime is 252417881. The reversal of 252417839 is 938714252.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252417839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 252417796 and 252417805.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252413839) 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, 126208919 + 126208920.

It is an arithmetic number, because the mean of its divisors is an integer number (126208920).

Almost surely, 2^252417839 is an apocalyptic number.

252417839 is a deficient number, since it is larger than the sum of its proper divisors (1).

252417839 is an equidigital number, since it uses as much as digits as its factorization.

252417839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 41.

The square root of 252417839 is about 15887.6631069519. The cubic root of 252417839 is about 631.9848703516.

The spelling of 252417839 in words is "two hundred fifty-two million, four hundred seventeen thousand, eight hundred thirty-nine".