13722001 has 8 divisors (see below), whose sum is σ = 13932000. Its totient is φ = 13513728.

The previous prime is 13721993. The next prime is 13722019. The reversal of 13722001 is 10022731.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 13722001 - 2³ = 13721993 is a prime.

It is a super-2 number, since 2×13722001² = 376586622888002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13722091) 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, 27250 + ... + 27748.

It is an arithmetic number, because the mean of its divisors is an integer number (1741500).

Almost surely, 2^13722001 is an apocalyptic number.

It is an amenable number.

13722001 is a deficient number, since it is larger than the sum of its proper divisors (209999).

13722001 is a wasteful number, since it uses less digits than its factorization.

13722001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 863.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 13722001 is about 3704.3219352535. The cubic root of 13722001 is about 239.4082702747.

Adding to 13722001 its reverse (10022731), we get a palindrome (23744732).

The spelling of 13722001 in words is "thirteen million, seven hundred twenty-two thousand, one".