252739 has 4 divisors (see below), whose sum is σ = 267624. Its totient is φ = 237856.

The previous prime is 252737. The next prime is 252761. The reversal of 252739 is 937252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 252739 - 2¹ = 252737 is a prime.

It is a Duffinian 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, 7417 + ... + 7450.

It is an arithmetic number, because the mean of its divisors is an integer number (66906).

2²⁵²⁷³⁹ is an apocalyptic number.

252739 is a deficient number, since it is larger than the sum of its proper divisors (14885).

252739 is a wasteful number, since it uses less digits than its factorization.

252739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14884.

The product of its digits is 3780, while the sum is 28.

The square root of 252739 is about 502.7315386964. The cubic root of 252739 is about 63.2252789704.

The spelling of 252739 in words is "two hundred fifty-two thousand, seven hundred thirty-nine".