22581057 has 8 divisors (see below), whose sum is σ = 30194784. Its totient is φ = 15010688.

The previous prime is 22581043. The next prime is 22581059. The reversal of 22581057 is 75018522.

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

It is a cyclic number.

It is not a de Polignac number, because 22581057 - 2¹⁴ = 22564673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22581059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9603 + ... + 11720.

It is an arithmetic number, because the mean of its divisors is an integer number (3774348).

Almost surely, 2^22581057 is an apocalyptic number.

It is an amenable number.

22581057 is a deficient number, since it is larger than the sum of its proper divisors (7613727).

22581057 is a wasteful number, since it uses less digits than its factorization.

22581057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21679.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 22581057 is about 4751.9529669390. The cubic root of 22581057 is about 282.6494137434.

Adding to 22581057 its reverse (75018522), we get a palindrome (97599579).

The spelling of 22581057 in words is "twenty-two million, five hundred eighty-one thousand, fifty-seven".