2221560 has 192 divisors, whose sum is σ = 8618400. Its totient is φ = 506880.

The previous prime is 2221523. The next prime is 2221567. The reversal of 2221560 is 651222.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221567) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 130672 + ... + 130688.

2^2221560 is an apocalyptic number.

2221560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2221560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4309200).

2221560 is an abundant number, since it is smaller than the sum of its proper divisors (6396840).

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

2221560 is a wasteful number, since it uses less digits than its factorization.

2221560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59 (or 38 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2221560 is about 1490.4898523640. The cubic root of 2221560 is about 130.4826241894.

Adding to 2221560 its reverse (651222), we get a palindrome (2872782).

The spelling of 2221560 in words is "two million, two hundred twenty-one thousand, five hundred sixty".