252740399 has 8 divisors (see below), whose sum is σ = 264049632. Its totient is φ = 241457920.

The previous prime is 252740393. The next prime is 252740407. The reversal of 252740399 is 993047252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 252740399 - 2⁸ = 252740143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252740393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14027 + ... + 26499.

It is an arithmetic number, because the mean of its divisors is an integer number (33006204).

Almost surely, 2^252740399 is an apocalyptic number.

252740399 is a deficient number, since it is larger than the sum of its proper divisors (11309233).

252740399 is a wasteful number, since it uses less digits than its factorization.

252740399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13377.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 252740399 is about 15897.8111386442. The cubic root of 252740399 is about 632.2539562832.

The spelling of 252740399 in words is "two hundred fifty-two million, seven hundred forty thousand, three hundred ninety-nine".