2152857 has 16 divisors (see below), whose sum is σ = 3387392. Its totient is φ = 1190160.

The previous prime is 2152849. The next prime is 2152861. The reversal of 2152857 is 7582512.

It is not a de Polignac number, because 2152857 - 2³ = 2152849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2152817) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1003 + ... + 2304.

It is an arithmetic number, because the mean of its divisors is an integer number (211712).

2^2152857 is an apocalyptic number.

It is an amenable number.

2152857 is a deficient number, since it is larger than the sum of its proper divisors (1234535).

2152857 is a wasteful number, since it uses less digits than its factorization.

2152857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3348.

The product of its digits is 5600, while the sum is 30.

The square root of 2152857 is about 1467.2617353424. The cubic root of 2152857 is about 129.1234321252.

The spelling of 2152857 in words is "two million, one hundred fifty-two thousand, eight hundred fifty-seven".