2315621 has 32 divisors (see below), whose sum is σ = 3214080. Its totient is φ = 1612800.

The previous prime is 2315611. The next prime is 2315629. The reversal of 2315621 is 1265132.

2315621 = T₃₅₈ + T₃₅₉ + ... + T₃₉₀.

2315621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-2315621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2315593 and 2315602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2315629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37931 + ... + 37991.

It is an arithmetic number, because the mean of its divisors is an integer number (100440).

2^2315621 is an apocalyptic number.

It is an amenable number.

2315621 is a deficient number, since it is larger than the sum of its proper divisors (898459).

2315621 is a wasteful number, since it uses less digits than its factorization.

2315621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125.

The product of its digits is 360, while the sum is 20.

The square root of 2315621 is about 1521.7164650486. The cubic root of 2315621 is about 132.2987760854.

The spelling of 2315621 in words is "two million, three hundred fifteen thousand, six hundred twenty-one".