252206566 has 4 divisors (see below), whose sum is σ = 378309852. Its totient is φ = 126103282.

The previous prime is 252206519. The next prime is 252206579. The reversal of 252206566 is 665602252.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63051640 + ... + 63051643.

It is an arithmetic number, because the mean of its divisors is an integer number (94577463).

Almost surely, 2^252206566 is an apocalyptic number.

252206566 is a deficient number, since it is larger than the sum of its proper divisors (126103286).

252206566 is a wasteful number, since it uses less digits than its factorization.

252206566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126103285.

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 252206566 is about 15881.0127510811. The cubic root of 252206566 is about 631.8084979662.

The spelling of 252206566 in words is "two hundred fifty-two million, two hundred six thousand, five hundred sixty-six".