252551443 has 2 divisors, whose sum is σ = 252551444. Its totient is φ = 252551442.

The previous prime is 252551423. The next prime is 252551471. The reversal of 252551443 is 344155252.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252551443 is a prime.

It is a super-2 number, since 2×252551443² = 127564462722764498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (252551423) 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, 126275721 + 126275722.

It is an arithmetic number, because the mean of its divisors is an integer number (126275722).

Almost surely, 2^252551443 is an apocalyptic number.

252551443 is a deficient number, since it is larger than the sum of its proper divisors (1).

252551443 is an equidigital number, since it uses as much as digits as its factorization.

252551443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24000, while the sum is 31.

The square root of 252551443 is about 15891.8671967771. The cubic root of 252551443 is about 632.0963532460.

The spelling of 252551443 in words is "two hundred fifty-two million, five hundred fifty-one thousand, four hundred forty-three".