2056037281 has 4 divisors (see below), whose sum is σ = 2075998912. Its totient is φ = 2036075652.

The previous prime is 2056037267. The next prime is 2056037287. The reversal of 2056037281 is 1827306502.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2056037281 - 2¹⁵ = 2056004513 is a prime.

It is a super-3 number, since 3×2056037281³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2056037287) 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, 9980661 + ... + 9980866.

It is an arithmetic number, because the mean of its divisors is an integer number (518999728).

Almost surely, 2^2056037281 is an apocalyptic number.

It is an amenable number.

2056037281 is a deficient number, since it is larger than the sum of its proper divisors (19961631).

2056037281 is a wasteful number, since it uses less digits than its factorization.

2056037281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19961630.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 2056037281 is about 45343.5472917592. The cubic root of 2056037281 is about 1271.5799216145.

The spelling of 2056037281 in words is "two billion, fifty-six million, thirty-seven thousand, two hundred eighty-one".