13722537 has 8 divisors (see below), whose sum is σ = 18528640. Its totient is φ = 9032400.

The previous prime is 13722529. The next prime is 13722571. The reversal of 13722537 is 73522731.

13722537 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 13722537 - 2³ = 13722529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13722517) 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, 28714 + ... + 29187.

It is an arithmetic number, because the mean of its divisors is an integer number (2316080).

Almost surely, 2^13722537 is an apocalyptic number.

It is an amenable number.

13722537 is a deficient number, since it is larger than the sum of its proper divisors (4806103).

13722537 is an equidigital number, since it uses as much as digits as its factorization.

13722537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57983.

The product of its digits is 8820, while the sum is 30.

The square root of 13722537 is about 3704.3942824705. The cubic root of 13722537 is about 239.4113874382.

The spelling of 13722537 in words is "thirteen million, seven hundred twenty-two thousand, five hundred thirty-seven".