2145560 has 16 divisors (see below), whose sum is σ = 4827600. Its totient is φ = 858208.

The previous prime is 2145551. The next prime is 2145617. The reversal of 2145560 is 655412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26780 + ... + 26859.

It is an arithmetic number, because the mean of its divisors is an integer number (301725).

2^2145560 is an apocalyptic number.

2145560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2145560 is an abundant number, since it is smaller than the sum of its proper divisors (2682040).

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

2145560 is a wasteful number, since it uses less digits than its factorization.

2145560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53650 (or 53646 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2145560 is about 1464.7730199591. The cubic root of 2145560 is about 128.9773812074.

The spelling of 2145560 in words is "two million, one hundred forty-five thousand, five hundred sixty".