13722057 has 24 divisors (see below), whose sum is σ = 20666880. Its totient is φ = 8763840.

The previous prime is 13722019. The next prime is 13722067. The reversal of 13722057 is 75022731.

It is not a de Polignac number, because 13722057 - 2⁶ = 13721993 is a prime.

It is a super-2 number, since 2×13722057² = 376589696622498, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13722057.

It is not an unprimeable number, because it can be changed into a prime (13722067) 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 23 ways as a sum of consecutive naturals, for example, 38044 + ... + 38402.

It is an arithmetic number, because the mean of its divisors is an integer number (861120).

Almost surely, 2^13722057 is an apocalyptic number.

It is an amenable number.

13722057 is a deficient number, since it is larger than the sum of its proper divisors (6944823).

13722057 is a wasteful number, since it uses less digits than its factorization.

13722057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533 (or 530 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 13722057 is about 3704.3294939840. The cubic root of 13722057 is about 239.4085959523.

Adding to 13722057 its reverse (75022731), we get a palindrome (88744788).

The spelling of 13722057 in words is "thirteen million, seven hundred twenty-two thousand, fifty-seven".