22254015 has 16 divisors (see below), whose sum is σ = 40693248. Its totient is φ = 10173216.

The previous prime is 22253993. The next prime is 22254017. The reversal of 22254015 is 51045222.

It is a happy number.

It is not a de Polignac number, because 22254015 - 2¹⁰ = 22252991 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 22253982 and 22254000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22254017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105867 + ... + 106076.

It is an arithmetic number, because the mean of its divisors is an integer number (2543328).

Almost surely, 2^22254015 is an apocalyptic number.

22254015 is a deficient number, since it is larger than the sum of its proper divisors (18439233).

22254015 is a wasteful number, since it uses less digits than its factorization.

22254015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211958.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 22254015 is about 4717.4161359795. The cubic root of 22254015 is about 281.2782332151.

Adding to 22254015 its reverse (51045222), we get a palindrome (73299237).

The spelling of 22254015 in words is "twenty-two million, two hundred fifty-four thousand, fifteen".