22150554 has 16 divisors (see below), whose sum is σ = 45730560. Its totient is φ = 7145280.

The previous prime is 22150553. The next prime is 22150567. The reversal of 22150554 is 45505122.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22150553) 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, 59359 + ... + 59730.

It is an arithmetic number, because the mean of its divisors is an integer number (2858160).

Almost surely, 2^22150554 is an apocalyptic number.

22150554 is an abundant number, since it is smaller than the sum of its proper divisors (23580006).

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

22150554 is a wasteful number, since it uses less digits than its factorization.

22150554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119125.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 22150554 is about 4706.4375062249. The cubic root of 22150554 is about 280.8416596740.

Adding to 22150554 its reverse (45505122), we get a palindrome (67655676).

The spelling of 22150554 in words is "twenty-two million, one hundred fifty thousand, five hundred fifty-four".