256061055 has 16 divisors (see below), whose sum is σ = 433797984. Its totient is φ = 128532480.

The previous prime is 256061011. The next prime is 256061063. The reversal of 256061055 is 550160652.

It is not a de Polignac number, because 256061055 - 2⁶ = 256060991 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 501826 + ... + 502335.

It is an arithmetic number, because the mean of its divisors is an integer number (27112374).

Almost surely, 2^256061055 is an apocalyptic number.

256061055 is a deficient number, since it is larger than the sum of its proper divisors (177736929).

256061055 is a wasteful number, since it uses less digits than its factorization.

256061055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004186.

The product of its (nonzero) digits is 9000, while the sum is 30.

The square root of 256061055 is about 16001.9078550028. The cubic root of 256061055 is about 635.0108953015.

The spelling of 256061055 in words is "two hundred fifty-six million, sixty-one thousand, fifty-five".