22145254 has 8 divisors (see below), whose sum is σ = 35171928. Its totient is φ = 10421280.

The previous prime is 22145243. The next prime is 22145269. The reversal of 22145254 is 45254122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 325632 + ... + 325699.

It is an arithmetic number, because the mean of its divisors is an integer number (4396491).

Almost surely, 2^22145254 is an apocalyptic number.

22145254 is a deficient number, since it is larger than the sum of its proper divisors (13026674).

22145254 is a wasteful number, since it uses less digits than its factorization.

22145254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651350.

The product of its digits is 3200, while the sum is 25.

The square root of 22145254 is about 4705.8744139639. The cubic root of 22145254 is about 280.8192587365.

Adding to 22145254 its reverse (45254122), we get a palindrome (67399376).

The spelling of 22145254 in words is "twenty-two million, one hundred forty-five thousand, two hundred fifty-four".