2156297 has 16 divisors (see below), whose sum is σ = 2685312. Its totient is φ = 1701120.

The previous prime is 2156279. The next prime is 2156299. The reversal of 2156297 is 7926512.

It is a cyclic number.

It is not a de Polignac number, because 2156297 - 2⁸ = 2156041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2156299) 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, 1988 + ... + 2874.

It is an arithmetic number, because the mean of its divisors is an integer number (167832).

2^2156297 is an apocalyptic number.

It is an amenable number.

2156297 is a deficient number, since it is larger than the sum of its proper divisors (529015).

2156297 is a wasteful number, since it uses less digits than its factorization.

2156297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928.

The product of its digits is 7560, while the sum is 32.

The square root of 2156297 is about 1468.4335190944. The cubic root of 2156297 is about 129.1921699671.

The spelling of 2156297 in words is "two million, one hundred fifty-six thousand, two hundred ninety-seven".