2056021567 has 8 divisors (see below), whose sum is σ = 2090868224. Its totient is φ = 2021355648.

The previous prime is 2056021511. The next prime is 2056021579. The reversal of 2056021567 is 7651206502.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2056021567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2056021067) 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, 22143 + ... + 67840.

It is an arithmetic number, because the mean of its divisors is an integer number (261358528).

Almost surely, 2^2056021567 is an apocalyptic number.

2056021567 is a deficient number, since it is larger than the sum of its proper divisors (34846657).

2056021567 is an equidigital number, since it uses as much as digits as its factorization.

2056021567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90369.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 2056021567 is about 45343.3740142923. The cubic root of 2056021567 is about 1271.5766821048.

The spelling of 2056021567 in words is "two billion, fifty-six million, twenty-one thousand, five hundred sixty-seven".