22051345 has 8 divisors (see below), whose sum is σ = 26487720. Its totient is φ = 17623680.

The previous prime is 22051331. The next prime is 22051369. The reversal of 22051345 is 54315022.

It can be written as a sum of positive squares in 4 ways, for example, as 5721664 + 16329681 = 2392^2 + 4041^2 .

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

It is not a de Polignac number, because 22051345 - 2⁵ = 22051313 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6675 + ... + 9415.

It is an arithmetic number, because the mean of its divisors is an integer number (3310965).

Almost surely, 2^22051345 is an apocalyptic number.

It is an amenable number.

22051345 is a deficient number, since it is larger than the sum of its proper divisors (4436375).

22051345 is a wasteful number, since it uses less digits than its factorization.

22051345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4355.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 22051345 is about 4695.8859653957. The cubic root of 22051345 is about 280.4217496253.

Adding to 22051345 its reverse (54315022), we get a palindrome (76366367).

The spelling of 22051345 in words is "twenty-two million, fifty-one thousand, three hundred forty-five".