2151085 has 8 divisors (see below), whose sum is σ = 2717280. Its totient is φ = 1630224.

The previous prime is 2151073. The next prime is 2151089. The reversal of 2151085 is 5801512.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2151085 is a prime.

2151085 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151089) 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, 11227 + ... + 11416.

It is an arithmetic number, because the mean of its divisors is an integer number (339660).

2^2151085 is an apocalyptic number.

It is an amenable number.

2151085 is a deficient number, since it is larger than the sum of its proper divisors (566195).

2151085 is a wasteful number, since it uses less digits than its factorization.

2151085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22667.

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 2151085 is about 1466.6577651245. The cubic root of 2151085 is about 129.0879955670.

Adding to 2151085 its reverse (5801512), we get a palindrome (7952597).

The spelling of 2151085 in words is "two million, one hundred fifty-one thousand, eighty-five".