256045153 has 8 divisors (see below), whose sum is σ = 315132608. Its totient is φ = 202585104.

The previous prime is 256045117. The next prime is 256045169. The reversal of 256045153 is 351540652.

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 256045153 - 2¹³ = 256036961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (256045103) 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 7 ways as a sum of consecutive naturals, for example, 1406751 + ... + 1406932.

It is an arithmetic number, because the mean of its divisors is an integer number (39391576).

Almost surely, 2^256045153 is an apocalyptic number.

It is an amenable number.

256045153 is a deficient number, since it is larger than the sum of its proper divisors (59087455).

256045153 is a wasteful number, since it uses less digits than its factorization.

256045153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2813703.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 256045153 is about 16001.4109690364. The cubic root of 256045153 is about 634.9977498009.

The spelling of 256045153 in words is "two hundred fifty-six million, forty-five thousand, one hundred fifty-three".