22551460 has 12 divisors (see below), whose sum is σ = 47358108. Its totient is φ = 9020576.

The previous prime is 22551457. The next prime is 22551467. The reversal of 22551460 is 6415522.

It can be written as a sum of positive squares in 2 ways, for example, as 4301476 + 18249984 = 2074^2 + 4272^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22551467) 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, 563767 + ... + 563806.

It is an arithmetic number, because the mean of its divisors is an integer number (3946509).

Almost surely, 2^22551460 is an apocalyptic number.

22551460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22551460 is an abundant number, since it is smaller than the sum of its proper divisors (24806648).

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

22551460 is a wasteful number, since it uses less digits than its factorization.

22551460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1127582 (or 1127580 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 22551460 is about 4748.8377525454. The cubic root of 22551460 is about 282.5258701868.

Adding to 22551460 its reverse (6415522), we get a palindrome (28966982).

The spelling of 22551460 in words is "twenty-two million, five hundred fifty-one thousand, four hundred sixty".