252566497 has 2 divisors, whose sum is σ = 252566498. Its totient is φ = 252566496.

The previous prime is 252566471. The next prime is 252566513. The reversal of 252566497 is 794665252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156350016 + 96216481 = 12504^2 + 9809^2 .

It is a cyclic number.

It is not a de Polignac number, because 252566497 - 2²³ = 244177889 is a prime.

It is a super-3 number, since 3×252566497³ (a number of 26 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (252561497) 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, 126283248 + 126283249.

It is an arithmetic number, because the mean of its divisors is an integer number (126283249).

Almost surely, 2^252566497 is an apocalyptic number.

It is an amenable number.

252566497 is a deficient number, since it is larger than the sum of its proper divisors (1).

252566497 is an equidigital number, since it uses as much as digits as its factorization.

252566497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 907200, while the sum is 46.

The square root of 252566497 is about 15892.3408282103. The cubic root of 252566497 is about 632.1089122575.

The spelling of 252566497 in words is "two hundred fifty-two million, five hundred sixty-six thousand, four hundred ninety-seven".