16540523 has 4 divisors (see below), whose sum is σ = 16560768. Its totient is φ = 16520280.

The previous prime is 16540499. The next prime is 16540529. The reversal of 16540523 is 32504561.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16540523 is a prime.

It is a super-2 number, since 2×16540523² = 547177802227058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16540492 and 16540501.

It is not an unprimeable number, because it can be changed into a prime (16540529) 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, 8843 + ... + 10548.

It is an arithmetic number, because the mean of its divisors is an integer number (4140192).

Almost surely, 2^16540523 is an apocalyptic number.

16540523 is a deficient number, since it is larger than the sum of its proper divisors (20245).

16540523 is an equidigital number, since it uses as much as digits as its factorization.

16540523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20244.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 16540523 is about 4067.0041799831. The cubic root of 16540523 is about 254.7904108912.

The spelling of 16540523 in words is "sixteen million, five hundred forty thousand, five hundred twenty-three".