2157056 has 40 divisors (see below), whose sum is σ = 4713984. Its totient is φ = 977920.

The previous prime is 2157041. The next prime is 2157091. The reversal of 2157056 is 6507512.

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, 5441 + ... + 5823.

2^2157056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2157056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2356992).

2157056 is an abundant number, since it is smaller than the sum of its proper divisors (2556928).

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

2157056 is an equidigital number, since it uses as much as digits as its factorization.

2157056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412 (or 396 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 2157056 is about 1468.6919350225. The cubic root of 2157056 is about 129.2073264064.

The spelling of 2157056 in words is "two million, one hundred fifty-seven thousand, fifty-six".