22551402 has 16 divisors (see below), whose sum is σ = 45158400. Its totient is φ = 7507872.

The previous prime is 22551391. The next prime is 22551409. The reversal of 22551402 is 20415522.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22551409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4503 + ... + 8085.

It is an arithmetic number, because the mean of its divisors is an integer number (2822400).

Almost surely, 2^22551402 is an apocalyptic number.

22551402 is an abundant number, since it is smaller than the sum of its proper divisors (22606998).

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

22551402 is a wasteful number, since it uses less digits than its factorization.

22551402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4637.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 22551402 is about 4748.8316457840. The cubic root of 22551402 is about 282.5256279776.

Adding to 22551402 its reverse (20415522), we get a palindrome (42966924).

The spelling of 22551402 in words is "twenty-two million, five hundred fifty-one thousand, four hundred two".