2165059056 has 20 divisors (see below), whose sum is σ = 5593069352. Its totient is φ = 721686336.

The previous prime is 2165059049. The next prime is 2165059081. The reversal of 2165059056 is 6509505612.

It is a super-2 number, since 2×2165059056² = 9374961431935222272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22552651 + ... + 22552746.

Almost surely, 2^2165059056 is an apocalyptic number.

It is an amenable number.

2165059056 is an abundant number, since it is smaller than the sum of its proper divisors (3428010296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2165059056 is a wasteful number, since it uses less digits than its factorization.

2165059056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45105408 (or 45105402 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 39.

The square root of 2165059056 is about 46530.1950995265. The cubic root of 2165059056 is about 1293.6692313740.

The spelling of 2165059056 in words is "two billion, one hundred sixty-five million, fifty-nine thousand, fifty-six".