13105501 has 2 divisors, whose sum is σ = 13105502. Its totient is φ = 13105500.

The previous prime is 13105489. The next prime is 13105507. The reversal of 13105501 is 10550131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12924025 + 181476 = 3595^2 + 426^2 .

It is an emirp because it is prime and its reverse (10550131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13105501 - 2⁷ = 13105373 is a prime.

It is a super-2 number, since 2×13105501² = 343508312922002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13105507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6552750 + 6552751.

It is an arithmetic number, because the mean of its divisors is an integer number (6552751).

Almost surely, 2^13105501 is an apocalyptic number.

It is an amenable number.

13105501 is a deficient number, since it is larger than the sum of its proper divisors (1).

13105501 is an equidigital number, since it uses as much as digits as its factorization.

13105501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75, while the sum is 16.

The square root of 13105501 is about 3620.1520686292. The cubic root of 13105501 is about 235.7678280224.

Adding to 13105501 its reverse (10550131), we get a palindrome (23655632).

The spelling of 13105501 in words is "thirteen million, one hundred five thousand, five hundred one".