10491555 has 8 divisors (see below), whose sum is σ = 16786512. Its totient is φ = 5595488.

The previous prime is 10491541. The next prime is 10491571. The reversal of 10491555 is 55519401.

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 10491555 - 2⁴ = 10491539 is a prime.

It is a super-2 number, since 2×10491555² = 220145452636050, which contains 22 as substring.

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, 349704 + ... + 349733.

It is an arithmetic number, because the mean of its divisors is an integer number (2098314).

Almost surely, 2^10491555 is an apocalyptic number.

10491555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

10491555 is a deficient number, since it is larger than the sum of its proper divisors (6294957).

10491555 is an equidigital number, since it uses as much as digits as its factorization.

10491555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699445.

The product of its (nonzero) digits is 4500, while the sum is 30.

The square root of 10491555 is about 3239.0669952936. The cubic root of 10491555 is about 218.9172348371.

The spelling of 10491555 in words is "ten million, four hundred ninety-one thousand, five hundred fifty-five".