2261570 has 16 divisors (see below), whose sum is σ = 4285440. Its totient is φ = 856944.

The previous prime is 2261569. The next prime is 2261573. The reversal of 2261570 is 751622.

It is a super-2 number, since 2×2261570² = 10229397729800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2261573) 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, 5762 + ... + 6141.

It is an arithmetic number, because the mean of its divisors is an integer number (267840).

2^2261570 is an apocalyptic number.

2261570 is a deficient number, since it is larger than the sum of its proper divisors (2023870).

2261570 is a wasteful number, since it uses less digits than its factorization.

2261570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11929.

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

The square root of 2261570 is about 1503.8517214140. The cubic root of 2261570 is about 131.2612930570.

The spelling of 2261570 in words is "two million, two hundred sixty-one thousand, five hundred seventy".