252240669 has 16 divisors (see below), whose sum is σ = 376637440. Its totient is φ = 166834080.

The previous prime is 252240661. The next prime is 252240683. The reversal of 252240669 is 966042252.

252240669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 252240669 - 2³ = 252240661 is a prime.

It is a super-2 number, since 2×252240669² = 127250710195135122, 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 (252240661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33352 + ... + 40209.

It is an arithmetic number, because the mean of its divisors is an integer number (23539840).

Almost surely, 2^252240669 is an apocalyptic number.

It is an amenable number.

252240669 is a deficient number, since it is larger than the sum of its proper divisors (124396771).

252240669 is a wasteful number, since it uses less digits than its factorization.

252240669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73697 (or 73691 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 252240669 is about 15882.0864183520. The cubic root of 252240669 is about 631.8369740873.

The spelling of 252240669 in words is "two hundred fifty-two million, two hundred forty thousand, six hundred sixty-nine".