11166501 has 16 divisors (see below), whose sum is σ = 15833664. Its totient is φ = 6975744.

The previous prime is 11166497. The next prime is 11166503. The reversal of 11166501 is 10566111.

It is not a de Polignac number, because 11166501 - 2² = 11166497 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11166503) 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 15 ways as a sum of consecutive naturals, for example, 18730 + ... + 19316.

It is an arithmetic number, because the mean of its divisors is an integer number (989604).

Almost surely, 2^11166501 is an apocalyptic number.

It is an amenable number.

11166501 is a deficient number, since it is larger than the sum of its proper divisors (4667163).

11166501 is a wasteful number, since it uses less digits than its factorization.

11166501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980.

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 11166501 is about 3341.6314877616. The cubic root of 11166501 is about 223.5145004080.

The spelling of 11166501 in words is "eleven million, one hundred sixty-six thousand, five hundred one".