2152491 has 16 divisors (see below), whose sum is σ = 3296640. Its totient is φ = 1235520.

The previous prime is 2152483. The next prime is 2152499. The reversal of 2152491 is 1942512.

It is an interprime number because it is at equal distance from previous prime (2152483) and next prime (2152499).

It is not a de Polignac number, because 2152491 - 2³ = 2152483 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2152499) 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, 1090 + ... + 2343.

It is an arithmetic number, because the mean of its divisors is an integer number (206040).

2^2152491 is an apocalyptic number.

2152491 is a deficient number, since it is larger than the sum of its proper divisors (1144149).

2152491 is a wasteful number, since it uses less digits than its factorization.

2152491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3466.

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

The square root of 2152491 is about 1467.1370079171. The cubic root of 2152491 is about 129.1161144299.

The spelling of 2152491 in words is "two million, one hundred fifty-two thousand, four hundred ninety-one".