2056156297 has 4 divisors (see below), whose sum is σ = 2214322180. Its totient is φ = 1897990416.

The previous prime is 2056156259. The next prime is 2056156301. The reversal of 2056156297 is 7926516502.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7926516502 = 2 ⋅3963258251.

It can be written as a sum of positive squares in 2 ways, for example, as 685601856 + 1370554441 = 26184^2 + 37021^2 .

It is a cyclic number.

It is not a de Polignac number, because 2056156297 - 2⁷ = 2056156169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2056156247) 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, 79082922 + ... + 79082947.

It is an arithmetic number, because the mean of its divisors is an integer number (553580545).

Almost surely, 2^2056156297 is an apocalyptic number.

It is an amenable number.

2056156297 is a deficient number, since it is larger than the sum of its proper divisors (158165883).

2056156297 is a wasteful number, since it uses less digits than its factorization.

2056156297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158165882.

The product of its (nonzero) digits is 226800, while the sum is 43.

The square root of 2056156297 is about 45344.8596535484. The cubic root of 2056156297 is about 1271.6044567461.

The spelling of 2056156297 in words is "two billion, fifty-six million, one hundred fifty-six thousand, two hundred ninety-seven".