13722554 has 8 divisors (see below), whose sum is σ = 20815380. Its totient is φ = 6784096.

The previous prime is 13722529. The next prime is 13722571. The reversal of 13722554 is 45522731.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12411529 + 1311025 = 3523^2 + 1145^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38369 + ... + 38724.

Almost surely, 2^13722554 is an apocalyptic number.

13722554 is a deficient number, since it is larger than the sum of its proper divisors (7092826).

13722554 is an equidigital number, since it uses as much as digits as its factorization.

13722554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77184.

The product of its digits is 8400, while the sum is 29.

The square root of 13722554 is about 3704.3965770419. The cubic root of 13722554 is about 239.4114863021.

The spelling of 13722554 in words is "thirteen million, seven hundred twenty-two thousand, five hundred fifty-four".