10556091 has 24 divisors (see below), whose sum is σ = 18767840. Its totient is φ = 5567616.

The previous prime is 10556083. The next prime is 10556093. The reversal of 10556091 is 19065501.

10556091 is a `hidden beast` number, since 1 + 0 + 55 + 609 + 1 = 666.

It is not a de Polignac number, because 10556091 - 2³ = 10556083 is a prime.

It is a super-2 number, since 2×10556091² = 222862114400562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10556093) 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 23 ways as a sum of consecutive naturals, for example, 5626 + ... + 7263.

Almost surely, 2^10556091 is an apocalyptic number.

10556091 is a deficient number, since it is larger than the sum of its proper divisors (8211749).

10556091 is a wasteful number, since it uses less digits than its factorization.

10556091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12915 (or 12912 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 27.

The square root of 10556091 is about 3249.0138503860. The cubic root of 10556091 is about 219.3651879119.

The spelling of 10556091 in words is "ten million, five hundred fifty-six thousand, ninety-one".