252780051 has 16 divisors (see below), whose sum is σ = 353816064. Its totient is φ = 160220544.

The previous prime is 252780049. The next prime is 252780061. The reversal of 252780051 is 150087252.

It is not a de Polignac number, because 252780051 - 2¹ = 252780049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (252780001) 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 15 ways as a sum of consecutive naturals, for example, 555 + ... + 22491.

It is an arithmetic number, because the mean of its divisors is an integer number (22113504).

Almost surely, 2^252780051 is an apocalyptic number.

252780051 is a deficient number, since it is larger than the sum of its proper divisors (101036013).

252780051 is a wasteful number, since it uses less digits than its factorization.

252780051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22130.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 252780051 is about 15899.0581796533. The cubic root of 252780051 is about 632.2870189607.

The spelling of 252780051 in words is "two hundred fifty-two million, seven hundred eighty thousand, fifty-one".