22261542 has 8 divisors (see below), whose sum is σ = 44523096. Its totient is φ = 7420512.

The previous prime is 22261529. The next prime is 22261549. The reversal of 22261542 is 24516222.

It is a happy number.

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

22261542 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22261549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1855123 + ... + 1855134.

It is an arithmetic number, because the mean of its divisors is an integer number (5565387).

Almost surely, 2^22261542 is an apocalyptic number.

22261542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22261542 is a wasteful number, since it uses less digits than its factorization.

22261542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3710262.

The product of its digits is 1920, while the sum is 24.

The square root of 22261542 is about 4718.2138569590. The cubic root of 22261542 is about 281.3099419893.

Adding to 22261542 its reverse (24516222), we get a palindrome (46777764).

The spelling of 22261542 in words is "twenty-two million, two hundred sixty-one thousand, five hundred forty-two".