252741 has 4 divisors (see below), whose sum is σ = 336992. Its totient is φ = 168492.

The previous prime is 252737. The next prime is 252761. The reversal of 252741 is 147252.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 252741 - 2² = 252737 is a prime.

It is a D-number.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42121 + ... + 42126.

It is an arithmetic number, because the mean of its divisors is an integer number (84248).

2²⁵²⁷⁴¹ is an apocalyptic number.

It is an amenable number.

252741 is a deficient number, since it is larger than the sum of its proper divisors (84251).

252741 is an equidigital number, since it uses as much as digits as its factorization.

252741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84250.

The product of its digits is 560, while the sum is 21.

The square root of 252741 is about 502.7335278256. The cubic root of 252741 is about 63.2254457436.

Adding to 252741 its reverse (147252), we get a palindrome (399993).

The spelling of 252741 in words is "two hundred fifty-two thousand, seven hundred forty-one".