252199845 has 32 divisors (see below), whose sum is σ = 474733440. Its totient is φ = 126593280.

The previous prime is 252199819. The next prime is 252199861. The reversal of 252199845 is 548991252.

It is a happy number.

It is not a de Polignac number, because 252199845 - 2⁵ = 252199813 is a prime.

It is a super-3 number, since 3×252199845³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 252199845.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52651 + ... + 57240.

It is an arithmetic number, because the mean of its divisors is an integer number (14835420).

Almost surely, 2^252199845 is an apocalyptic number.

It is an amenable number.

252199845 is a deficient number, since it is larger than the sum of its proper divisors (222533595).

252199845 is a wasteful number, since it uses less digits than its factorization.

252199845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109922 (or 109916 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 252199845 is about 15880.8011447786. The cubic root of 252199845 is about 631.8028856055.

The spelling of 252199845 in words is "two hundred fifty-two million, one hundred ninety-nine thousand, eight hundred forty-five".