22251452 has 6 divisors (see below), whose sum is σ = 38940048. Its totient is φ = 11125724.

The previous prime is 22251421. The next prime is 22251473. The reversal of 22251452 is 25415222.

It is a super-4 number, since 4×22251452⁴ (a number of 30 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2781428 + ... + 2781435.

It is an arithmetic number, because the mean of its divisors is an integer number (6490008).

Almost surely, 2^22251452 is an apocalyptic number.

It is an amenable number.

22251452 is a deficient number, since it is larger than the sum of its proper divisors (16688596).

22251452 is a wasteful number, since it uses less digits than its factorization.

22251452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5562867 (or 5562865 counting only the distinct ones).

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

The square root of 22251452 is about 4717.1444752096. The cubic root of 22251452 is about 281.2674345077.

Adding to 22251452 its reverse (25415222), we get a palindrome (47666674).

The spelling of 22251452 in words is "twenty-two million, two hundred fifty-one thousand, four hundred fifty-two".