83172811 has 2 divisors, whose sum is σ = 83172812. Its totient is φ = 83172810.

The previous prime is 83172797. The next prime is 83172827. The reversal of 83172811 is 11827138.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 83172811 - 2⁵ = 83172779 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (83172871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41586405 + 41586406.

It is an arithmetic number, because the mean of its divisors is an integer number (41586406).

Almost surely, 2^83172811 is an apocalyptic number.

83172811 is a deficient number, since it is larger than the sum of its proper divisors (1).

83172811 is an equidigital number, since it uses as much as digits as its factorization.

83172811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 31.

The square root of 83172811 is about 9119.9128833558. The cubic root of 83172811 is about 436.5095937468.

Adding to 83172811 its reverse (11827138), we get a palindrome (94999949).

The spelling of 83172811 in words is "eighty-three million, one hundred seventy-two thousand, eight hundred eleven".