2164957 has 4 divisors (see below), whose sum is σ = 2186080. Its totient is φ = 2143836.

The previous prime is 2164927. The next prime is 2164963. The reversal of 2164957 is 7594612.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2164957 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 (2164927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10407 + ... + 10612.

It is an arithmetic number, because the mean of its divisors is an integer number (546520).

2^2164957 is an apocalyptic number.

It is an amenable number.

2164957 is a deficient number, since it is larger than the sum of its proper divisors (21123).

2164957 is a wasteful number, since it uses less digits than its factorization.

2164957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21122.

The product of its digits is 15120, while the sum is 34.

The square root of 2164957 is about 1471.3792848888. The cubic root of 2164957 is about 129.3648904171.

The spelling of 2164957 in words is "two million, one hundred sixty-four thousand, nine hundred fifty-seven".