11545645 has 4 divisors (see below), whose sum is σ = 13854780. Its totient is φ = 9236512.

The previous prime is 11545643. The next prime is 11545649. The reversal of 11545645 is 54654511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54654511 = 557 ⋅98123.

It can be written as a sum of positive squares in 2 ways, for example, as 1471369 + 10074276 = 1213^2 + 3174^2 .

It is a cyclic number.

It is not a de Polignac number, because 11545645 - 2¹ = 11545643 is a prime.

It is a super-3 number, since 3×11545645³ (a number of 22 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11545643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1154560 + ... + 1154569.

It is an arithmetic number, because the mean of its divisors is an integer number (3463695).

Almost surely, 2^11545645 is an apocalyptic number.

It is an amenable number.

11545645 is a deficient number, since it is larger than the sum of its proper divisors (2309135).

11545645 is an equidigital number, since it uses as much as digits as its factorization.

11545645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2309134.

The product of its digits is 12000, while the sum is 31.

The square root of 11545645 is about 3397.8883148214. Note that the first 3 decimals coincide. The cubic root of 11545645 is about 226.0161120943.

The spelling of 11545645 in words is "eleven million, five hundred forty-five thousand, six hundred forty-five".