22251542 has 16 divisors (see below), whose sum is σ = 34020000. Its totient is φ = 10913280.

The previous prime is 22251533. The next prime is 22251569. The reversal of 22251542 is 24515222.

It is a super-2 number, since 2×22251542² = 990262242755528, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49334 + ... + 49782.

It is an arithmetic number, because the mean of its divisors is an integer number (2126250).

Almost surely, 2^22251542 is an apocalyptic number.

22251542 is a deficient number, since it is larger than the sum of its proper divisors (11768458).

22251542 is a wasteful number, since it uses less digits than its factorization.

22251542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871.

The product of its digits is 1600, while the sum is 23.

The square root of 22251542 is about 4717.1540148696. The cubic root of 22251542 is about 281.2678137194.

Adding to 22251542 its reverse (24515222), we get a palindrome (46766764).

The spelling of 22251542 in words is "twenty-two million, two hundred fifty-one thousand, five hundred forty-two".