13201557 has 8 divisors (see below), whose sum is σ = 17618976. Its totient is φ = 8792592.

The previous prime is 13201541. The next prime is 13201577. The reversal of 13201557 is 75510231.

13201557 is digitally balanced in base 3, 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 13201557 - 2⁴ = 13201541 is a prime.

It is a super-2 number, since 2×13201557² = 348562214448498, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13201577) 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 7 ways as a sum of consecutive naturals, for example, 4423 + ... + 6779.

It is an arithmetic number, because the mean of its divisors is an integer number (2202372).

Almost surely, 2^13201557 is an apocalyptic number.

It is an amenable number.

13201557 is a deficient number, since it is larger than the sum of its proper divisors (4417419).

13201557 is a wasteful number, since it uses less digits than its factorization.

13201557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4227.

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 13201557 is about 3633.3946936715. The cubic root of 13201557 is about 236.3424419179.

Adding to 13201557 its reverse (75510231), we get a palindrome (88711788).

The spelling of 13201557 in words is "thirteen million, two hundred one thousand, five hundred fifty-seven".