16542061 has 2 divisors, whose sum is σ = 16542062. Its totient is φ = 16542060.

The previous prime is 16542059. The next prime is 16542079. The reversal of 16542061 is 16024561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15721225 + 820836 = 3965^2 + 906^2 .

It is a cyclic number.

It is not a de Polignac number, because 16542061 - 2¹ = 16542059 is a prime.

Together with 16542059, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16542661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8271030 + 8271031.

It is an arithmetic number, because the mean of its divisors is an integer number (8271031).

Almost surely, 2^16542061 is an apocalyptic number.

It is an amenable number.

16542061 is a deficient number, since it is larger than the sum of its proper divisors (1).

16542061 is an equidigital number, since it uses as much as digits as its factorization.

16542061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 16542061 is about 4067.1932582556. The cubic root of 16542061 is about 254.7983077698.

The spelling of 16542061 in words is "sixteen million, five hundred forty-two thousand, sixty-one".