90525871 has 2 divisors, whose sum is σ = 90525872. Its totient is φ = 90525870.

The previous prime is 90525839. The next prime is 90525887. The reversal of 90525871 is 17852509.

It is a strong prime.

It is an emirp because it is prime and its reverse (17852509) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90525871 - 2⁵ = 90525839 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90525871.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90525811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45262935 + 45262936.

It is an arithmetic number, because the mean of its divisors is an integer number (45262936).

Almost surely, 2^90525871 is an apocalyptic number.

90525871 is a deficient number, since it is larger than the sum of its proper divisors (1).

90525871 is an equidigital number, since it uses as much as digits as its factorization.

90525871 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25200, while the sum is 37.

The square root of 90525871 is about 9514.5084476288. The cubic root of 90525871 is about 449.0116100919.

The spelling of 90525871 in words is "ninety million, five hundred twenty-five thousand, eight hundred seventy-one".