22506283 has 4 divisors (see below), whose sum is σ = 23830200. Its totient is φ = 21182368.

The previous prime is 22506277. The next prime is 22506287. The reversal of 22506283 is 38260522.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38260522 = 2 ⋅19130261.

It is a cyclic number.

It is not a de Polignac number, because 22506283 - 2⁹ = 22505771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22506287) 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, 661933 + ... + 661966.

It is an arithmetic number, because the mean of its divisors is an integer number (5957550).

Almost surely, 2^22506283 is an apocalyptic number.

22506283 is a deficient number, since it is larger than the sum of its proper divisors (1323917).

22506283 is a wasteful number, since it uses less digits than its factorization.

22506283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1323916.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 22506283 is about 4744.0787303754. The cubic root of 22506283 is about 282.3370841270.

The spelling of 22506283 in words is "twenty-two million, five hundred six thousand, two hundred eighty-three".