16516061 has 6 divisors (see below), whose sum is σ = 17545050. Its totient is φ = 15544256.

The previous prime is 16516043. The next prime is 16516063. The reversal of 16516061 is 16061561.

It can be written as a sum of positive squares in 3 ways, for example, as 2220100 + 14295961 = 1490^2 + 3781^2 .

It is a de Polignac number, because none of the positive numbers 2^k-16516061 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 16516061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16516063) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28286 + ... + 28863.

It is an arithmetic number, because the mean of its divisors is an integer number (2924175).

Almost surely, 2^16516061 is an apocalyptic number.

It is an amenable number.

16516061 is a deficient number, since it is larger than the sum of its proper divisors (1028989).

16516061 is an equidigital number, since it uses as much as digits as its factorization.

16516061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57183 (or 57166 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 16516061 is about 4063.9956938954. The cubic root of 16516061 is about 254.6647446090.

The spelling of 16516061 in words is "sixteen million, five hundred sixteen thousand, sixty-one".