11445855 has 16 divisors (see below), whose sum is σ = 18360960. Its totient is φ = 6088608.

The previous prime is 11445829. The next prime is 11445871. The reversal of 11445855 is 55854411.

11445855 = 1511² + 1512² + ... + 1515².

It is not a de Polignac number, because 11445855 - 2¹⁰ = 11444831 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7116 + ... + 8574.

It is an arithmetic number, because the mean of its divisors is an integer number (1147560).

Almost surely, 2^11445855 is an apocalyptic number.

11445855 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11445855 is a deficient number, since it is larger than the sum of its proper divisors (6915105).

11445855 is a wasteful number, since it uses less digits than its factorization.

11445855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1990.

The product of its digits is 16000, while the sum is 33.

The square root of 11445855 is about 3383.1723278603. The cubic root of 11445855 is about 225.3630681460.

The spelling of 11445855 in words is "eleven million, four hundred forty-five thousand, eight hundred fifty-five".