16542497 has 4 divisors (see below), whose sum is σ = 17261760. Its totient is φ = 15823236.

The previous prime is 16542473. The next prime is 16542509. The reversal of 16542497 is 79424561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16542497 - 2¹⁴ = 16526113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16542497.

It is not an unprimeable number, because it can be changed into a prime (16542397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 359597 + ... + 359642.

It is an arithmetic number, because the mean of its divisors is an integer number (4315440).

Almost surely, 2^16542497 is an apocalyptic number.

It is an amenable number.

16542497 is a deficient number, since it is larger than the sum of its proper divisors (719263).

16542497 is an equidigital number, since it uses as much as digits as its factorization.

16542497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719262.

The product of its digits is 60480, while the sum is 38.

The square root of 16542497 is about 4067.2468575192. The cubic root of 16542497 is about 254.8005463277.

The spelling of 16542497 in words is "sixteen million, five hundred forty-two thousand, four hundred ninety-seven".