11723545 has 4 divisors (see below), whose sum is σ = 14068260. Its totient is φ = 9378832.

The previous prime is 11723527. The next prime is 11723573. The reversal of 11723545 is 54532711.

It is a happy number.

11723545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6901129 + 4822416 = 2627^2 + 2196^2 .

It is a cyclic number.

It is not a de Polignac number, because 11723545 - 2¹¹ = 11721497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1172350 + ... + 1172359.

It is an arithmetic number, because the mean of its divisors is an integer number (3517065).

Almost surely, 2^11723545 is an apocalyptic number.

It is an amenable number.

11723545 is a deficient number, since it is larger than the sum of its proper divisors (2344715).

11723545 is an equidigital number, since it uses as much as digits as its factorization.

11723545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2344714.

The product of its digits is 4200, while the sum is 28.

The square root of 11723545 is about 3423.9662673572. The cubic root of 11723545 is about 227.1710497667.

The spelling of 11723545 in words is "eleven million, seven hundred twenty-three thousand, five hundred forty-five".