28526171 has 2 divisors, whose sum is σ = 28526172. Its totient is φ = 28526170.

The previous prime is 28526129. The next prime is 28526203. The reversal of 28526171 is 17162582.

It is an a-pointer prime, because the next prime (28526203) can be obtained adding 28526171 to its sum of digits (32).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28526171 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28526671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14263085 + 14263086.

It is an arithmetic number, because the mean of its divisors is an integer number (14263086).

Almost surely, 2^28526171 is an apocalyptic number.

28526171 is a deficient number, since it is larger than the sum of its proper divisors (1).

28526171 is an equidigital number, since it uses as much as digits as its factorization.

28526171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6720, while the sum is 32.

The square root of 28526171 is about 5340.9897022930. The cubic root of 28526171 is about 305.5492066462.

The spelling of 28526171 in words is "twenty-eight million, five hundred twenty-six thousand, one hundred seventy-one".