252785567 has 4 divisors (see below), whose sum is σ = 257555160. Its totient is φ = 248015976.

The previous prime is 252785549. The next prime is 252785581. The reversal of 252785567 is 765587252.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-252785567 is a prime.

It is a super-2 number, since 2×252785567² = 127801085767022978, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252785537) 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, 2384717 + ... + 2384822.

It is an arithmetic number, because the mean of its divisors is an integer number (64388790).

Almost surely, 2^252785567 is an apocalyptic number.

252785567 is a deficient number, since it is larger than the sum of its proper divisors (4769593).

252785567 is an equidigital number, since it uses as much as digits as its factorization.

252785567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4769592.

The product of its digits is 1176000, while the sum is 47.

The square root of 252785567 is about 15899.2316481017. The cubic root of 252785567 is about 632.2916180444.

It can be divided in two parts, 252785 and 567, that added together give a palindrome (253352).

The spelling of 252785567 in words is "two hundred fifty-two million, seven hundred eighty-five thousand, five hundred sixty-seven".