11445945 has 32 divisors (see below), whose sum is σ = 21255168. Its totient is φ = 5151168.

The previous prime is 11445911. The next prime is 11445953. The reversal of 11445945 is 54954411.

It is not a de Polignac number, because 11445945 - 2⁷ = 11445817 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6222 + ... + 7848.

It is an arithmetic number, because the mean of its divisors is an integer number (664224).

Almost surely, 2^11445945 is an apocalyptic number.

11445945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11445945 is a deficient number, since it is larger than the sum of its proper divisors (9809223).

11445945 is a wasteful number, since it uses less digits than its factorization.

11445945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1709.

The product of its digits is 14400, while the sum is 33.

The square root of 11445945 is about 3383.1856289598. The cubic root of 11445945 is about 225.3636588292.

The spelling of 11445945 in words is "eleven million, four hundred forty-five thousand, nine hundred forty-five".