11543545 has 24 divisors (see below), whose sum is σ = 15811200. Its totient is φ = 8064576.

The previous prime is 11543503. The next prime is 11543549. The reversal of 11543545 is 54534511.

11543545 = 389² + 390² + ... + 453².

11543545 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11543545 - 2¹³ = 11535353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11543549) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15696 + ... + 16414.

It is an arithmetic number, because the mean of its divisors is an integer number (658800).

Almost surely, 2^11543545 is an apocalyptic number.

It is an amenable number.

11543545 is a deficient number, since it is larger than the sum of its proper divisors (4267655).

11543545 is a wasteful number, since it uses less digits than its factorization.

11543545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769 (or 756 counting only the distinct ones).

The product of its digits is 6000, while the sum is 28.

The square root of 11543545 is about 3397.5792853148. The cubic root of 11543545 is about 226.0024081504.

It can be divided in two parts, 115 and 43545, that added together give a triangular number (43660 = T₂₉₅).

The spelling of 11543545 in words is "eleven million, five hundred forty-three thousand, five hundred forty-five".