2056256121 has 8 divisors (see below), whose sum is σ = 2742397504. Its totient is φ = 1370476080.

The previous prime is 2056256117. The next prime is 2056256177. The reversal of 2056256121 is 1216526502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2056256121 - 2² = 2056256117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2056256101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76765 + ... + 100026.

It is an arithmetic number, because the mean of its divisors is an integer number (342799688).

Almost surely, 2^2056256121 is an apocalyptic number.

It is an amenable number.

2056256121 is a deficient number, since it is larger than the sum of its proper divisors (686141383).

2056256121 is a wasteful number, since it uses less digits than its factorization.

2056256121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180671.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 2056256121 is about 45345.9603603232. The cubic root of 2056256121 is about 1271.6250347196.

The spelling of 2056256121 in words is "two billion, fifty-six million, two hundred fifty-six thousand, one hundred twenty-one".