2215564 has 24 divisors (see below), whose sum is σ = 4219488. Its totient is φ = 1011840.

The previous prime is 2215561. The next prime is 2215573. The reversal of 2215564 is 4655122.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2215561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6969 + ... + 7279.

It is an arithmetic number, because the mean of its divisors is an integer number (175812).

2^2215564 is an apocalyptic number.

It is an amenable number.

2215564 is a deficient number, since it is larger than the sum of its proper divisors (2003924).

2215564 is a wasteful number, since it uses less digits than its factorization.

2215564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465 (or 463 counting only the distinct ones).

The product of its digits is 2400, while the sum is 25.

The square root of 2215564 is about 1488.4770740593. The cubic root of 2215564 is about 130.3651273630.

The spelling of 2215564 in words is "two million, two hundred fifteen thousand, five hundred sixty-four".