256056541 has 4 divisors (see below), whose sum is σ = 275753212. Its totient is φ = 236359872.

The previous prime is 256056523. The next prime is 256056551. The reversal of 256056541 is 145650652.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12040900 + 244015641 = 3470^2 + 15621^2 .

It is a cyclic number.

It is not a de Polignac number, because 256056541 - 2¹³ = 256048349 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 256056497 and 256056506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256056551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9848316 + ... + 9848341.

It is an arithmetic number, because the mean of its divisors is an integer number (68938303).

Almost surely, 2^256056541 is an apocalyptic number.

It is an amenable number.

256056541 is a deficient number, since it is larger than the sum of its proper divisors (19696671).

256056541 is a wasteful number, since it uses less digits than its factorization.

256056541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19696670.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 256056541 is about 16001.7668086996. The cubic root of 256056541 is about 635.0071638268.

The spelling of 256056541 in words is "two hundred fifty-six million, fifty-six thousand, five hundred forty-one".