22145542 has 8 divisors (see below), whose sum is σ = 33238296. Its totient is φ = 11066112.

The previous prime is 22145537. The next prime is 22145549. The reversal of 22145542 is 24554122.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22145549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4678 + ... + 8134.

It is an arithmetic number, because the mean of its divisors is an integer number (4154787).

Almost surely, 2^22145542 is an apocalyptic number.

22145542 is a deficient number, since it is larger than the sum of its proper divisors (11092754).

22145542 is a wasteful number, since it uses less digits than its factorization.

22145542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6662.

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

The square root of 22145542 is about 4705.9050139160. The cubic root of 22145542 is about 280.8204760868.

Adding to 22145542 its reverse (24554122), we get a palindrome (46699664).

The spelling of 22145542 in words is "twenty-two million, one hundred forty-five thousand, five hundred forty-two".