22254520 has 32 divisors (see below), whose sum is σ = 50281920. Its totient is φ = 8864640.

The previous prime is 22254517. The next prime is 22254523. The reversal of 22254520 is 2545222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22254517) and next prime (22254523).

It is a junction number, because it is equal to n+sod(n) for n = 22254491 and 22254500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22254523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9814 + ... + 11866.

It is an arithmetic number, because the mean of its divisors is an integer number (1571310).

Almost surely, 2^22254520 is an apocalyptic number.

22254520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22254520 is an abundant number, since it is smaller than the sum of its proper divisors (28027400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22254520 is a wasteful number, since it uses less digits than its factorization.

22254520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2335 (or 2331 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 22254520 is about 4717.4696607397. The cubic root of 22254520 is about 281.2803608377.

Adding to 22254520 its reverse (2545222), we get a palindrome (24799742).

It can be divided in two parts, 2 and 2254520, that added together give a palindrome (2254522).

The spelling of 22254520 in words is "twenty-two million, two hundred fifty-four thousand, five hundred twenty".