252261351 has 16 divisors (see below), whose sum is σ = 395704800. Its totient is φ = 158281344.

The previous prime is 252261341. The next prime is 252261371. The reversal of 252261351 is 153162252.

It is a happy number.

252261351 is a `hidden beast` number, since 2 + 52 + 261 + 351 = 666.

It is not a de Polignac number, because 252261351 - 2¹³ = 252253159 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252261341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 274336 + ... + 275253.

It is an arithmetic number, because the mean of its divisors is an integer number (24731550).

Almost surely, 2^252261351 is an apocalyptic number.

252261351 is a deficient number, since it is larger than the sum of its proper divisors (143443449).

252261351 is a wasteful number, since it uses less digits than its factorization.

252261351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 549615 (or 549609 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 252261351 is about 15882.7375159322. The cubic root of 252261351 is about 631.8542423774.

Subtracting from 252261351 its reverse (153162252), we obtain a palindrome (99099099).

The spelling of 252261351 in words is "two hundred fifty-two million, two hundred sixty-one thousand, three hundred fifty-one".