2915621 has 4 divisors (see below), whose sum is σ = 2944032. Its totient is φ = 2887212.

The previous prime is 2915611. The next prime is 2915623. The reversal of 2915621 is 1265192.

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 2915621 - 2⁶ = 2915557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2915623) 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, 14051 + ... + 14256.

It is an arithmetic number, because the mean of its divisors is an integer number (736008).

2^2915621 is an apocalyptic number.

It is an amenable number.

2915621 is a deficient number, since it is larger than the sum of its proper divisors (28411).

2915621 is a wasteful number, since it uses less digits than its factorization.

2915621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28410.

The product of its digits is 1080, while the sum is 26.

The square root of 2915621 is about 1707.5189603633. The cubic root of 2915621 is about 142.8599048514.

The spelling of 2915621 in words is "two million, nine hundred fifteen thousand, six hundred twenty-one".