13422257 has 8 divisors (see below), whose sum is σ = 13749120. Its totient is φ = 13098960.

The previous prime is 13422251. The next prime is 13422259. The reversal of 13422257 is 75222431.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13422257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13422251) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 7688 + ... + 9270.

It is an arithmetic number, because the mean of its divisors is an integer number (1718640).

Almost surely, 2^13422257 is an apocalyptic number.

It is an amenable number.

13422257 is a deficient number, since it is larger than the sum of its proper divisors (326863).

13422257 is a wasteful number, since it uses less digits than its factorization.

13422257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1783.

The product of its digits is 3360, while the sum is 26.

The square root of 13422257 is about 3663.6398567545. The cubic root of 13422257 is about 237.6522060364.

Adding to 13422257 its reverse (75222431), we get a palindrome (88644688).

The spelling of 13422257 in words is "thirteen million, four hundred twenty-two thousand, two hundred fifty-seven".