2232561 has 4 divisors (see below), whose sum is σ = 2976752. Its totient is φ = 1488372.

The previous prime is 2232551. The next prime is 2232569. The reversal of 2232561 is 1652322.

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 not a de Polignac number, because 2232561 - 2¹¹ = 2230513 is a prime.

It is a super-3 number, since 3×2232561³ = 33383453056021123443, which contains 333 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2232569) 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, 372091 + ... + 372096.

It is an arithmetic number, because the mean of its divisors is an integer number (744188).

2^2232561 is an apocalyptic number.

It is an amenable number.

2232561 is a deficient number, since it is larger than the sum of its proper divisors (744191).

2232561 is an equidigital number, since it uses as much as digits as its factorization.

2232561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744190.

The product of its digits is 720, while the sum is 21.

The square root of 2232561 is about 1494.1756924806. The cubic root of 2232561 is about 130.6976497344.

Adding to 2232561 its reverse (1652322), we get a palindrome (3884883).

The spelling of 2232561 in words is "two million, two hundred thirty-two thousand, five hundred sixty-one".