16885513 has 2 divisors, whose sum is σ = 16885514. Its totient is φ = 16885512.

The previous prime is 16885499. The next prime is 16885559. The reversal of 16885513 is 31558861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15657849 + 1227664 = 3957^2 + 1108^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16885513 is a prime.

It is not a weakly prime, because it can be changed into another prime (16885613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8442756 + 8442757.

It is an arithmetic number, because the mean of its divisors is an integer number (8442757).

Almost surely, 2^16885513 is an apocalyptic number.

It is an amenable number.

16885513 is a deficient number, since it is larger than the sum of its proper divisors (1).

16885513 is an equidigital number, since it uses as much as digits as its factorization.

16885513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 37.

The square root of 16885513 is about 4109.1985836657. The cubic root of 16885513 is about 256.5496460615.

The spelling of 16885513 in words is "sixteen million, eight hundred eighty-five thousand, five hundred thirteen".