9905255 has 8 divisors (see below), whose sum is σ = 12020400. Its totient is φ = 7834816.

The previous prime is 9905239. The next prime is 9905261. The reversal of 9905255 is 5525099.

9905255 is digitally balanced in base 2, 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 a cyclic number.

It is not a de Polignac number, because 9905255 - 2⁴ = 9905239 is a prime.

It is a super-2 number, since 2×9905255² = 196228153230050, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10685 + ... + 11574.

It is an arithmetic number, because the mean of its divisors is an integer number (1502550).

Almost surely, 2^9905255 is an apocalyptic number.

9905255 is a deficient number, since it is larger than the sum of its proper divisors (2115145).

9905255 is a wasteful number, since it uses less digits than its factorization.

9905255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22353.

The product of its (nonzero) digits is 20250, while the sum is 35.

The square root of 9905255 is about 3147.2615080416. The cubic root of 9905255 is about 214.7609024015.

The spelling of 9905255 in words is "nine million, nine hundred five thousand, two hundred fifty-five".