252666377 has 4 divisors (see below), whose sum is σ = 259495236. Its totient is φ = 245837520.

The previous prime is 252666371. The next prime is 252666383. The reversal of 252666377 is 773666252.

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 (252666371) and next prime (252666383).

It can be written as a sum of positive squares in 2 ways, for example, as 120209296 + 132457081 = 10964^2 + 11509^2 .

It is a cyclic number.

It is not a de Polignac number, because 252666377 - 2⁴ = 252666361 is a prime.

It is a super-2 number, since 2×252666377² = 127680596132612258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (252666371) 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 3 ways as a sum of consecutive naturals, for example, 3414374 + ... + 3414447.

It is an arithmetic number, because the mean of its divisors is an integer number (64873809).

Almost surely, 2^252666377 is an apocalyptic number.

It is an amenable number.

252666377 is a deficient number, since it is larger than the sum of its proper divisors (6828859).

252666377 is an equidigital number, since it uses as much as digits as its factorization.

252666377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6828858.

The product of its digits is 635040, while the sum is 44.

The square root of 252666377 is about 15895.4829118212. The cubic root of 252666377 is about 632.1922259171.

The spelling of 252666377 in words is "two hundred fifty-two million, six hundred sixty-six thousand, three hundred seventy-seven".