252645 has 8 divisors (see below), whose sum is σ = 404256. Its totient is φ = 134736.

The previous prime is 252641. The next prime is 252667. The reversal of 252645 is 546252.

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

It is not a de Polignac number, because 252645 - 2² = 252641 is a prime.

252645 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8407 + ... + 8436.

It is an arithmetic number, because the mean of its divisors is an integer number (50532).

2²⁵²⁶⁴⁵ is an apocalyptic number.

It is an amenable number.

252645 is a deficient number, since it is larger than the sum of its proper divisors (151611).

252645 is a wasteful number, since it uses less digits than its factorization.

252645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16851.

The product of its digits is 2400, while the sum is 24.

The square root of 252645 is about 502.6380407410. The cubic root of 252645 is about 63.2174396405.

Adding to 252645 its reverse (546252), we get a palindrome (798897).

The spelling of 252645 in words is "two hundred fifty-two thousand, six hundred forty-five".