16506541 has 16 divisors (see below), whose sum is σ = 18157824. Its totient is φ = 14943744.

The previous prime is 16506533. The next prime is 16506547. The reversal of 16506541 is 14560561.

It is not a de Polignac number, because 16506541 - 2³ = 16506533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16506547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58186 + ... + 58468.

It is an arithmetic number, because the mean of its divisors is an integer number (1134864).

Almost surely, 2^16506541 is an apocalyptic number.

It is an amenable number.

16506541 is a deficient number, since it is larger than the sum of its proper divisors (1651283).

16506541 is a wasteful number, since it uses less digits than its factorization.

16506541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 16506541 is about 4062.8242639819. The cubic root of 16506541 is about 254.6158048864.

The spelling of 16506541 in words is "sixteen million, five hundred six thousand, five hundred forty-one".