252805837 has 4 divisors (see below), whose sum is σ = 260960896. Its totient is φ = 244650780.

The previous prime is 252805831. The next prime is 252805843. The reversal of 252805837 is 738508252.

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 (252805831) and next prime (252805843).

It is a cyclic number.

It is not a de Polignac number, because 252805837 - 2³ = 252805829 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 252805837.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252805831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4077483 + ... + 4077544.

It is an arithmetic number, because the mean of its divisors is an integer number (65240224).

Almost surely, 2^252805837 is an apocalyptic number.

It is an amenable number.

252805837 is a deficient number, since it is larger than the sum of its proper divisors (8155059).

252805837 is an equidigital number, since it uses as much as digits as its factorization.

252805837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8155058.

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 252805837 is about 15899.8690875114. The cubic root of 252805837 is about 632.3085180184.

The spelling of 252805837 in words is "two hundred fifty-two million, eight hundred five thousand, eight hundred thirty-seven".