252437461 has 2 divisors, whose sum is σ = 252437462. Its totient is φ = 252437460.

The previous prime is 252437453. The next prime is 252437467. The reversal of 252437461 is 164734252.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184688100 + 67749361 = 13590^2 + 8231^2 .

It is a cyclic number.

It is not a de Polignac number, because 252437461 - 2³ = 252437453 is a prime.

It is a super-2 number, since 2×252437461² = 127449343432253042, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (252437467) 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, 126218730 + 126218731.

It is an arithmetic number, because the mean of its divisors is an integer number (126218731).

Almost surely, 2^252437461 is an apocalyptic number.

It is an amenable number.

252437461 is a deficient number, since it is larger than the sum of its proper divisors (1).

252437461 is an equidigital number, since it uses as much as digits as its factorization.

252437461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 34.

The square root of 252437461 is about 15888.2806181160. The cubic root of 252437461 is about 632.0012459584.

The spelling of 252437461 in words is "two hundred fifty-two million, four hundred thirty-seven thousand, four hundred sixty-one".