16542487 has 16 divisors (see below), whose sum is σ = 18472608. Its totient is φ = 14716800.

The previous prime is 16542473. The next prime is 16542509. The reversal of 16542487 is 78424561.

It is a cyclic number.

It is not a de Polignac number, because 16542487 - 2¹⁵ = 16509719 is a prime.

It is a super-2 number, since 2×16542487² = 547307752290338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16542187) 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, 56313 + ... + 56605.

It is an arithmetic number, because the mean of its divisors is an integer number (1154538).

Almost surely, 2^16542487 is an apocalyptic number.

16542487 is a deficient number, since it is larger than the sum of its proper divisors (1930121).

16542487 is a wasteful number, since it uses less digits than its factorization.

16542487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450.

The product of its digits is 53760, while the sum is 37.

The square root of 16542487 is about 4067.2456281862. The cubic root of 16542487 is about 254.8004949851.

The spelling of 16542487 in words is "sixteen million, five hundred forty-two thousand, four hundred eighty-seven".