256053415 has 16 divisors (see below), whose sum is σ = 314720640. Its totient is φ = 199897600.

The previous prime is 256053407. The next prime is 256053419. The reversal of 256053415 is 514350652.

It is not a de Polignac number, because 256053415 - 2³ = 256053407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256053419) 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 15 ways as a sum of consecutive naturals, for example, 90015 + ... + 92815.

It is an arithmetic number, because the mean of its divisors is an integer number (19670040).

Almost surely, 2^256053415 is an apocalyptic number.

256053415 is a deficient number, since it is larger than the sum of its proper divisors (58667225).

256053415 is a wasteful number, since it uses less digits than its factorization.

256053415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3242.

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

The square root of 256053415 is about 16001.6691316875. The cubic root of 256053415 is about 635.0045797095.

The spelling of 256053415 in words is "two hundred fifty-six million, fifty-three thousand, four hundred fifteen".