2152649 has 4 divisors (see below), whose sum is σ = 2183040. Its totient is φ = 2122260.

The previous prime is 2152637. The next prime is 2152663. The reversal of 2152649 is 9462512.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2152649 - 2⁸ = 2152393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2152669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15089 + ... + 15230.

It is an arithmetic number, because the mean of its divisors is an integer number (545760).

2^2152649 is an apocalyptic number.

It is an amenable number.

2152649 is a deficient number, since it is larger than the sum of its proper divisors (30391).

2152649 is an equidigital number, since it uses as much as digits as its factorization.

2152649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30390.

The product of its digits is 4320, while the sum is 29.

The square root of 2152649 is about 1467.1908532976. The cubic root of 2152649 is about 129.1192735367.

The spelling of 2152649 in words is "two million, one hundred fifty-two thousand, six hundred forty-nine".