256652155 has 4 divisors (see below), whose sum is σ = 307982592. Its totient is φ = 205321720.

The previous prime is 256652089. The next prime is 256652161. The reversal of 256652155 is 551256652.

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

It is not a de Polignac number, because 256652155 - 2¹⁹ = 256127867 is a prime.

It is a super-2 number, since 2×256652155² = 131740657332288050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25665211 + ... + 25665220.

It is an arithmetic number, because the mean of its divisors is an integer number (76995648).

Almost surely, 2^256652155 is an apocalyptic number.

256652155 is a deficient number, since it is larger than the sum of its proper divisors (51330437).

256652155 is an equidigital number, since it uses as much as digits as its factorization.

256652155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51330436.

The product of its digits is 90000, while the sum is 37.

The square root of 256652155 is about 16020.3668809425. The cubic root of 256652155 is about 635.4991466715.

The spelling of 256652155 in words is "two hundred fifty-six million, six hundred fifty-two thousand, one hundred fifty-five".