2103564 has 24 divisors (see below), whose sum is σ = 4932928. Its totient is φ = 697680.

The previous prime is 2103553. The next prime is 2103583. The reversal of 2103564 is 4653012.

It is a happy number.

2103564 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 2103564.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3399 + ... + 3969.

2^2103564 is an apocalyptic number.

It is an amenable number.

2103564 is an abundant number, since it is smaller than the sum of its proper divisors (2829364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2103564 is a wasteful number, since it uses less digits than its factorization.

2103564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885 (or 883 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2103564 is about 1450.3668501452. The cubic root of 2103564 is about 128.1303197474.

Adding to 2103564 its reverse (4653012), we get a palindrome (6756576).

The spelling of 2103564 in words is "two million, one hundred three thousand, five hundred sixty-four".