2157085 has 8 divisors (see below), whose sum is σ = 2958336. Its totient is φ = 1479120.

The previous prime is 2157041. The next prime is 2157091. The reversal of 2157085 is 5807512.

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

It is not a de Polignac number, because 2157085 - 2¹³ = 2148893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30781 + ... + 30850.

It is an arithmetic number, because the mean of its divisors is an integer number (369792).

2^2157085 is an apocalyptic number.

It is an amenable number.

2157085 is a deficient number, since it is larger than the sum of its proper divisors (801251).

2157085 is an equidigital number, since it uses as much as digits as its factorization.

2157085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61643.

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 2157085 is about 1468.7018077200. The cubic root of 2157085 is about 129.2079054357.

The spelling of 2157085 in words is "two million, one hundred fifty-seven thousand, eighty-five".