85528147 has 2 divisors, whose sum is σ = 85528148. Its totient is φ = 85528146.

The previous prime is 85528129. The next prime is 85528151. The reversal of 85528147 is 74182558.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85528147 - 2⁷ = 85528019 is a prime.

It is not a weakly prime, because it can be changed into another prime (85528447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42764073 + 42764074.

It is an arithmetic number, because the mean of its divisors is an integer number (42764074).

Almost surely, 2^85528147 is an apocalyptic number.

85528147 is a deficient number, since it is larger than the sum of its proper divisors (1).

85528147 is an equidigital number, since it uses as much as digits as its factorization.

85528147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 89600, while the sum is 40.

The square root of 85528147 is about 9248.1428946573. The cubic root of 85528147 is about 440.5917434250.

The spelling of 85528147 in words is "eighty-five million, five hundred twenty-eight thousand, one hundred forty-seven".