172916011 has 2 divisors, whose sum is σ = 172916012. Its totient is φ = 172916010.

The previous prime is 172915957. The next prime is 172916021. The reversal of 172916011 is 110619271.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 172916011 - 2¹¹ = 172913963 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (172916021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86458005 + 86458006.

It is an arithmetic number, because the mean of its divisors is an integer number (86458006).

Almost surely, 2^172916011 is an apocalyptic number.

172916011 is a deficient number, since it is larger than the sum of its proper divisors (1).

172916011 is an equidigital number, since it uses as much as digits as its factorization.

172916011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 28.

The square root of 172916011 is about 13149.7532676473. The cubic root of 172916011 is about 557.1152792242.

The spelling of 172916011 in words is "one hundred seventy-two million, nine hundred sixteen thousand, eleven".