2271560 has 32 divisors (see below), whose sum is σ = 5167800. Its totient is φ = 898560.

The previous prime is 2271553. The next prime is 2271569. The reversal of 2271560 is 651722.

It can be written as a sum of positive squares in 4 ways, for example, as 1800964 + 470596 = 1342^2 + 686^2 .

It is not an unprimeable number, because it can be changed into a prime (2271569) 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, 4100 + ... + 4620.

2^2271560 is an apocalyptic number.

2271560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2271560 is an abundant number, since it is smaller than the sum of its proper divisors (2896240).

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

2271560 is a wasteful number, since it uses less digits than its factorization.

2271560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 641 (or 637 counting only the distinct ones).

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

The square root of 2271560 is about 1507.1695326008. The cubic root of 2271560 is about 131.4542820346.

The spelling of 2271560 in words is "two million, two hundred seventy-one thousand, five hundred sixty".