252448749 has 12 divisors (see below), whose sum is σ = 416740896. Its totient is φ = 144256392.

The previous prime is 252448709. The next prime is 252448751. The reversal of 252448749 is 947844252.

252448749 is a `hidden beast` number, since 2 + 524 + 4 + 87 + 49 = 666.

It is not a de Polignac number, because 252448749 - 2⁹ = 252448237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252448709) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2003499 + ... + 2003624.

It is an arithmetic number, because the mean of its divisors is an integer number (34728408).

Almost surely, 2^252448749 is an apocalyptic number.

It is an amenable number.

252448749 is a deficient number, since it is larger than the sum of its proper divisors (164292147).

252448749 is a wasteful number, since it uses less digits than its factorization.

252448749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4007136 (or 4007133 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 252448749 is about 15888.6358445274. The cubic root of 252448749 is about 632.0106660126.

The spelling of 252448749 in words is "two hundred fifty-two million, four hundred forty-eight thousand, seven hundred forty-nine".