252551797 has 2 divisors, whose sum is σ = 252551798. Its totient is φ = 252551796.

The previous prime is 252551701. The next prime is 252551839. The reversal of 252551797 is 797155252.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 242144721 + 10407076 = 15561^2 + 3226^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252551797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252351797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126275898 + 126275899.

It is an arithmetic number, because the mean of its divisors is an integer number (126275899).

Almost surely, 2^252551797 is an apocalyptic number.

It is an amenable number.

252551797 is a deficient number, since it is larger than the sum of its proper divisors (1).

252551797 is an equidigital number, since it uses as much as digits as its factorization.

252551797 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 220500, while the sum is 43.

The square root of 252551797 is about 15891.8783345456. The cubic root of 252551797 is about 632.0966485812.

It can be divided in two parts, 252 and 551797, that added together give a square (552049 = 743²).

The spelling of 252551797 in words is "two hundred fifty-two million, five hundred fifty-one thousand, seven hundred ninety-seven".