2157089 has 8 divisors (see below), whose sum is σ = 2477280. Its totient is φ = 1857600.

The previous prime is 2157041. The next prime is 2157091. The reversal of 2157089 is 9807512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2157089 - 2¹⁶ = 2091553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2157989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4952 + ... + 5369.

It is an arithmetic number, because the mean of its divisors is an integer number (309660).

2^2157089 is an apocalyptic number.

It is an amenable number.

2157089 is a deficient number, since it is larger than the sum of its proper divisors (320191).

2157089 is a wasteful number, since it uses less digits than its factorization.

2157089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10351.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 2157089 is about 1468.7031694662. The cubic root of 2157089 is about 129.2079853014.

The spelling of 2157089 in words is "two million, one hundred fifty-seven thousand, eighty-nine".