22605545 has 8 divisors (see below), whose sum is σ = 27498696. Its totient is φ = 17836416.

The previous prime is 22605509. The next prime is 22605547. The reversal of 22605545 is 54550622.

22605545 = 206² + 207² + ... + 424².

It can be written as a sum of positive squares in 4 ways, for example, as 2319529 + 20286016 = 1523^2 + 4504^2 .

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 22605545 - 2¹⁶ = 22540009 is a prime.

It is a super-2 number, since 2×22605545² = 1022021329494050, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22605547) 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, 30602 + ... + 31331.

It is an arithmetic number, because the mean of its divisors is an integer number (3437337).

Almost surely, 2^22605545 is an apocalyptic number.

It is an amenable number.

22605545 is a deficient number, since it is larger than the sum of its proper divisors (4893151).

22605545 is an equidigital number, since it uses as much as digits as its factorization.

22605545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62011.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 22605545 is about 4754.5288935919. The cubic root of 22605545 is about 282.7515497704.

The spelling of 22605545 in words is "twenty-two million, six hundred five thousand, five hundred forty-five".