16172047 has 2 divisors, whose sum is σ = 16172048. Its totient is φ = 16172046.

The previous prime is 16172041. The next prime is 16172069. The reversal of 16172047 is 74027161.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 16172047 - 2¹⁹ = 15647759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16172041) 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, 8086023 + 8086024.

It is an arithmetic number, because the mean of its divisors is an integer number (8086024).

Almost surely, 2^16172047 is an apocalyptic number.

16172047 is a deficient number, since it is larger than the sum of its proper divisors (1).

16172047 is an equidigital number, since it uses as much as digits as its factorization.

16172047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 16172047 is about 4021.4483709231. The cubic root of 16172047 is about 252.8841820185.

The spelling of 16172047 in words is "sixteen million, one hundred seventy-two thousand, forty-seven".