252247669 has 2 divisors, whose sum is σ = 252247670. Its totient is φ = 252247668.

The previous prime is 252247657. The next prime is 252247673. The reversal of 252247669 is 966742252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 244547044 + 7700625 = 15638^2 + 2775^2 .

It is a cyclic number.

It is not a de Polignac number, because 252247669 - 2¹¹ = 252245621 is a prime.

It is a super-2 number, since 2×252247669² = 127257773031867122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252247469) 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, 126123834 + 126123835.

It is an arithmetic number, because the mean of its divisors is an integer number (126123835).

Almost surely, 2^252247669 is an apocalyptic number.

It is an amenable number.

252247669 is a deficient number, since it is larger than the sum of its proper divisors (1).

252247669 is an equidigital number, since it uses as much as digits as its factorization.

252247669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 43.

The square root of 252247669 is about 15882.3067908916. The cubic root of 252247669 is about 631.8428187936.

The spelling of 252247669 in words is "two hundred fifty-two million, two hundred forty-seven thousand, six hundred sixty-nine".