252818837 has 4 divisors (see below), whose sum is σ = 252851340. Its totient is φ = 252786336.

The previous prime is 252818821. The next prime is 252818873. The reversal of 252818837 is 738818252.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 220997956 + 31820881 = 14866^2 + 5641^2 .

It is a cyclic number.

It is not a de Polignac number, because 252818837 - 2⁴ = 252818821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252818437) 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, 3089 + ... + 22697.

It is an arithmetic number, because the mean of its divisors is an integer number (63212835).

Almost surely, 2^252818837 is an apocalyptic number.

It is an amenable number.

252818837 is a deficient number, since it is larger than the sum of its proper divisors (32503).

252818837 is a wasteful number, since it uses less digits than its factorization.

252818837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32502.

The product of its digits is 215040, while the sum is 44.

The square root of 252818837 is about 15900.2778906534. The cubic root of 252818837 is about 632.3193562041.

The spelling of 252818837 in words is "two hundred fifty-two million, eight hundred eighteen thousand, eight hundred thirty-seven".