252215555 has 8 divisors (see below), whose sum is σ = 303199632. Its totient is φ = 201411808.

The previous prime is 252215533. The next prime is 252215563. The reversal of 252215555 is 555512252.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 252215555 - 2¹⁸ = 251953411 is a prime.

It is a super-2 number, since 2×252215555² = 127225372367916050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41984 + ... + 47613.

It is an arithmetic number, because the mean of its divisors is an integer number (37899954).

Almost surely, 2^252215555 is an apocalyptic number.

252215555 is a deficient number, since it is larger than the sum of its proper divisors (50984077).

252215555 is an equidigital number, since it uses as much as digits as its factorization.

252215555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90165.

The product of its digits is 25000, while the sum is 32.

The square root of 252215555 is about 15881.2957594776. The cubic root of 252215555 is about 631.8160040609.

The spelling of 252215555 in words is "two hundred fifty-two million, two hundred fifteen thousand, five hundred fifty-five".