13805501 has 2 divisors, whose sum is σ = 13805502. Its totient is φ = 13805500.

The previous prime is 13805471. The next prime is 13805503. The reversal of 13805501 is 10550831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12243001 + 1562500 = 3499^2 + 1250^2 .

It is an emirp because it is prime and its reverse (10550831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13805501 - 2⁶ = 13805437 is a prime.

It is a super-2 number, since 2×13805501² = 381183715722002, which contains 22 as substring.

Together with 13805503, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13805503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6902750 + 6902751.

It is an arithmetic number, because the mean of its divisors is an integer number (6902751).

Almost surely, 2^13805501 is an apocalyptic number.

It is an amenable number.

13805501 is a deficient number, since it is larger than the sum of its proper divisors (1).

13805501 is an equidigital number, since it uses as much as digits as its factorization.

13805501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 13805501 is about 3715.5754601407. The cubic root of 13805501 is about 239.8928978136.

The spelling of 13805501 in words is "thirteen million, eight hundred five thousand, five hundred one".