252749 has 4 divisors (see below), whose sum is σ = 288864. Its totient is φ = 216636.

The previous prime is 252737. The next prime is 252761. The reversal of 252749 is 947252.

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 an interprime number because it is at equal distance from previous prime (252737) and next prime (252761).

It is a de Polignac number, because none of the positive numbers 2^k-252749 is a prime.

It is a d-powerful number, because it can be written as 2¹⁵ + 5 + 7⁵ + 2¹⁷ + 4⁸ + 9⁴ .

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 (252709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18047 + ... + 18060.

It is an arithmetic number, because the mean of its divisors is an integer number (72216).

2²⁵²⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

252749 is a deficient number, since it is larger than the sum of its proper divisors (36115).

252749 is an equidigital number, since it uses as much as digits as its factorization.

252749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36114.

The product of its digits is 5040, while the sum is 29.

The square root of 252749 is about 502.7414842640. The cubic root of 252749 is about 63.2261128273.

It can be divided in two parts, 252 and 749, that added together give a palindrome (1001).

The spelling of 252749 in words is "two hundred fifty-two thousand, seven hundred forty-nine".