22591641 has 8 divisors (see below), whose sum is σ = 30822880. Its totient is φ = 14710752.

The previous prime is 22591633. The next prime is 22591651. The reversal of 22591641 is 14619522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22591641 - 2³ = 22591633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22591599 and 22591608.

It is not an unprimeable number, because it can be changed into a prime (22591601) 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, 87436 + ... + 87693.

It is an arithmetic number, because the mean of its divisors is an integer number (3852860).

Almost surely, 2^22591641 is an apocalyptic number.

It is an amenable number.

22591641 is a deficient number, since it is larger than the sum of its proper divisors (8231239).

22591641 is a wasteful number, since it uses less digits than its factorization.

22591641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175175.

The product of its digits is 4320, while the sum is 30.

The square root of 22591641 is about 4753.0664838607. The cubic root of 22591641 is about 282.6935671847.

It can be divided in two parts, 22591 and 641, that added together give a palindrome (23232).

The spelling of 22591641 in words is "twenty-two million, five hundred ninety-one thousand, six hundred forty-one".