85121527 has 2 divisors, whose sum is σ = 85121528. Its totient is φ = 85121526.

The previous prime is 85121521. The next prime is 85121537. The reversal of 85121527 is 72512158.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85121527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85121521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42560763 + 42560764.

It is an arithmetic number, because the mean of its divisors is an integer number (42560764).

Almost surely, 2^85121527 is an apocalyptic number.

85121527 is a deficient number, since it is larger than the sum of its proper divisors (1).

85121527 is an equidigital number, since it uses as much as digits as its factorization.

85121527 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5600, while the sum is 31.

The square root of 85121527 is about 9226.1328301732. The cubic root of 85121527 is about 439.8924099887.

The spelling of 85121527 in words is "eighty-five million, one hundred twenty-one thousand, five hundred twenty-seven".