13122557 has 8 divisors (see below), whose sum is σ = 15019200. Its totient is φ = 11231424.

The previous prime is 13122547. The next prime is 13122601. The reversal of 13122557 is 75522131.

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 13122557 - 2⁶ = 13122493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13122547) 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, 8069 + ... + 9557.

It is an arithmetic number, because the mean of its divisors is an integer number (1877400).

Almost surely, 2^13122557 is an apocalyptic number.

It is an amenable number.

13122557 is a deficient number, since it is larger than the sum of its proper divisors (1896643).

13122557 is a wasteful number, since it uses less digits than its factorization.

13122557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2755.

The product of its digits is 2100, while the sum is 26.

The square root of 13122557 is about 3622.5070048241. The cubic root of 13122557 is about 235.8700627726.

Adding to 13122557 its reverse (75522131), we get a palindrome (88644688).

The spelling of 13122557 in words is "thirteen million, one hundred twenty-two thousand, five hundred fifty-seven".