2272561 has 4 divisors (see below), whose sum is σ = 2371392. Its totient is φ = 2173732.

The previous prime is 2272559. The next prime is 2272597. The reversal of 2272561 is 1652722.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2272561 - 2¹ = 2272559 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2272861) 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, 49381 + ... + 49426.

It is an arithmetic number, because the mean of its divisors is an integer number (592848).

2^2272561 is an apocalyptic number.

It is an amenable number.

2272561 is a deficient number, since it is larger than the sum of its proper divisors (98831).

2272561 is an equidigital number, since it uses as much as digits as its factorization.

2272561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98830.

The product of its digits is 1680, while the sum is 25.

The square root of 2272561 is about 1507.5015754552. The cubic root of 2272561 is about 131.4735883575.

The spelling of 2272561 in words is "two million, two hundred seventy-two thousand, five hundred sixty-one".