16550477 has 2 divisors, whose sum is σ = 16550478. Its totient is φ = 16550476.

The previous prime is 16550467. The next prime is 16550483. The reversal of 16550477 is 77405561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16410601 + 139876 = 4051^2 + 374^2 .

It is a cyclic number.

It is not a de Polignac number, because 16550477 - 2⁴ = 16550461 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16550437) 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 as a sum of consecutive naturals, namely, 8275238 + 8275239.

It is an arithmetic number, because the mean of its divisors is an integer number (8275239).

Almost surely, 2^16550477 is an apocalyptic number.

It is an amenable number.

16550477 is a deficient number, since it is larger than the sum of its proper divisors (1).

16550477 is an equidigital number, since it uses as much as digits as its factorization.

16550477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29400, while the sum is 35.

The square root of 16550477 is about 4068.2277468205. The cubic root of 16550477 is about 254.8415111530.

The spelling of 16550477 in words is "sixteen million, five hundred fifty thousand, four hundred seventy-seven".