252820765 has 4 divisors (see below), whose sum is σ = 303384924. Its totient is φ = 202256608.

The previous prime is 252820747. The next prime is 252820831. The reversal of 252820765 is 567028252.

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

It can be written as a sum of positive squares in 2 ways, for example, as 27730756 + 225090009 = 5266^2 + 15003^2 .

It is a cyclic number.

It is not a de Polignac number, because 252820765 - 2¹⁷ = 252689693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25282072 + ... + 25282081.

It is an arithmetic number, because the mean of its divisors is an integer number (75846231).

Almost surely, 2^252820765 is an apocalyptic number.

It is an amenable number.

252820765 is a deficient number, since it is larger than the sum of its proper divisors (50564159).

252820765 is an equidigital number, since it uses as much as digits as its factorization.

252820765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50564158.

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 252820765 is about 15900.3385184090. The cubic root of 252820765 is about 632.3209635588.

The spelling of 252820765 in words is "two hundred fifty-two million, eight hundred twenty thousand, seven hundred sixty-five".