252551399 has 4 divisors (see below), whose sum is σ = 252585480. Its totient is φ = 252517320.

The previous prime is 252551359. The next prime is 252551419. The reversal of 252551399 is 993155252.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252551399 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 (252551359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 704 + ... + 22485.

It is an arithmetic number, because the mean of its divisors is an integer number (63146370).

Almost surely, 2^252551399 is an apocalyptic number.

252551399 is a deficient number, since it is larger than the sum of its proper divisors (34081).

252551399 is a wasteful number, since it uses less digits than its factorization.

252551399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34080.

The product of its digits is 121500, while the sum is 41.

The square root of 252551399 is about 15891.8658124211. The cubic root of 252551399 is about 632.0963165376.

The spelling of 252551399 in words is "two hundred fifty-two million, five hundred fifty-one thousand, three hundred ninety-nine".