2154291 has 16 divisors (see below), whose sum is σ = 3102624. Its totient is φ = 1324544.

The previous prime is 2154281. The next prime is 2154293. The reversal of 2154291 is 1924512.

It is a cyclic number.

It is not a de Polignac number, because 2154291 - 2⁵ = 2154259 is a prime.

2154291 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2154293) 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, 2305 + ... + 3101.

It is an arithmetic number, because the mean of its divisors is an integer number (193914).

2^2154291 is an apocalyptic number.

2154291 is a deficient number, since it is larger than the sum of its proper divisors (948333).

2154291 is a wasteful number, since it uses less digits than its factorization.

2154291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870.

The product of its digits is 720, while the sum is 24.

The square root of 2154291 is about 1467.7503193663. The cubic root of 2154291 is about 129.1520951073.

The spelling of 2154291 in words is "two million, one hundred fifty-four thousand, two hundred ninety-one".