252780274 has 4 divisors (see below), whose sum is σ = 379170414. Its totient is φ = 126390136.

The previous prime is 252780271. The next prime is 252780277. The reversal of 252780274 is 472087252.

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

It is an interprime number because it is at equal distance from previous prime (252780271) and next prime (252780277).

It can be written as a sum of positive squares in only one way, i.e., 142635249 + 110145025 = 11943^2 + 10495^2 .

It is not an unprimeable number, because it can be changed into a prime (252780271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63195067 + ... + 63195070.

Almost surely, 2^252780274 is an apocalyptic number.

252780274 is a deficient number, since it is larger than the sum of its proper divisors (126390140).

252780274 is a wasteful number, since it uses less digits than its factorization.

252780274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126390139.

The product of its (nonzero) digits is 62720, while the sum is 37.

The square root of 252780274 is about 15899.0651926458. The cubic root of 252780274 is about 632.2872048931.

It can be divided in two parts, 2527802 and 74, that added together give a triangular number (2527876 = T₂₂₄₈).

The spelling of 252780274 in words is "two hundred fifty-two million, seven hundred eighty thousand, two hundred seventy-four".