2154885 has 16 divisors (see below), whose sum is σ = 3629760. Its totient is φ = 1088640.

The previous prime is 2154881. The next prime is 2154899. The reversal of 2154885 is 5884512.

It is not a de Polignac number, because 2154885 - 2² = 2154881 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154881) 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, 3496 + ... + 4065.

It is an arithmetic number, because the mean of its divisors is an integer number (226860).

2^2154885 is an apocalyptic number.

It is an amenable number.

2154885 is a deficient number, since it is larger than the sum of its proper divisors (1474875).

2154885 is a wasteful number, since it uses less digits than its factorization.

2154885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7588.

The product of its digits is 12800, while the sum is 33.

The square root of 2154885 is about 1467.9526559123. The cubic root of 2154885 is about 129.1639643324.

The spelling of 2154885 in words is "two million, one hundred fifty-four thousand, eight hundred eighty-five".