252513207 has 20 divisors (see below), whose sum is σ = 378792920. Its totient is φ = 168329016.

The previous prime is 252513199. The next prime is 252513227. The reversal of 252513207 is 702315252.

252513207 is a `hidden beast` number, since 2 + 525 + 132 + 0 + 7 = 666.

It is not a de Polignac number, because 252513207 - 2³ = 252513199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252513227) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13269 + ... + 26097.

It is an arithmetic number, because the mean of its divisors is an integer number (18939646).

Almost surely, 2^252513207 is an apocalyptic number.

252513207 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

252513207 is a deficient number, since it is larger than the sum of its proper divisors (126279713).

252513207 is an frugal number, since it uses more digits than its factorization.

252513207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12856 (or 12832 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 252513207 is about 15890.6641459695. The cubic root of 252513207 is about 632.0644520807.

Adding to 252513207 its reverse (702315252), we get a palindrome (954828459).

The spelling of 252513207 in words is "two hundred fifty-two million, five hundred thirteen thousand, two hundred seven".