22280527 has 4 divisors (see below), whose sum is σ = 22530960. Its totient is φ = 22030096.

The previous prime is 22280513. The next prime is 22280551. The reversal of 22280527 is 72508222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72508222 = 2 ⋅36254111.

It is a cyclic number.

It is not a de Polignac number, because 22280527 - 2¹⁵ = 22247759 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22280495 and 22280504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22280627) 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, 125083 + ... + 125260.

It is an arithmetic number, because the mean of its divisors is an integer number (5632740).

Almost surely, 2^22280527 is an apocalyptic number.

22280527 is a deficient number, since it is larger than the sum of its proper divisors (250433).

22280527 is an equidigital number, since it uses as much as digits as its factorization.

22280527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250432.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 22280527 is about 4720.2253124189. The cubic root of 22280527 is about 281.3898878104.

Adding to 22280527 its reverse (72508222), we get a palindrome (94788749).

The spelling of 22280527 in words is "twenty-two million, two hundred eighty thousand, five hundred twenty-seven".