252802781 has 8 divisors (see below), whose sum is σ = 315182784. Its totient is φ = 196989120.

The previous prime is 252802769. The next prime is 252802783. The reversal of 252802781 is 187208252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 252802781 - 2¹⁸ = 252540637 is a prime.

It is a super-2 number, since 2×252802781² = 127818492162667922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252802783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1641500 + ... + 1641653.

It is an arithmetic number, because the mean of its divisors is an integer number (39397848).

Almost surely, 2^252802781 is an apocalyptic number.

It is an amenable number.

252802781 is a deficient number, since it is larger than the sum of its proper divisors (62380003).

252802781 is a wasteful number, since it uses less digits than its factorization.

252802781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3283171.

The product of its (nonzero) digits is 17920, while the sum is 35.

The square root of 252802781 is about 15899.7729858008. The cubic root of 252802781 is about 632.3059701571.

The spelling of 252802781 in words is "two hundred fifty-two million, eight hundred two thousand, seven hundred eighty-one".