2217560 has 16 divisors (see below), whose sum is σ = 4989600. Its totient is φ = 887008.

The previous prime is 2217557. The next prime is 2217569. The reversal of 2217560 is 657122.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2217569) 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, 27680 + ... + 27759.

It is an arithmetic number, because the mean of its divisors is an integer number (311850).

2^2217560 is an apocalyptic number.

2217560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2217560 is an abundant number, since it is smaller than the sum of its proper divisors (2772040).

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

2217560 is a wasteful number, since it uses less digits than its factorization.

2217560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55450 (or 55446 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 2217560 is about 1489.1474070756. The cubic root of 2217560 is about 130.4042642288.

The spelling of 2217560 in words is "two million, two hundred seventeen thousand, five hundred sixty".