90525587 has 2 divisors, whose sum is σ = 90525588. Its totient is φ = 90525586.

The previous prime is 90525577. The next prime is 90525607. The reversal of 90525587 is 78552509.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90525587 - 2⁴ = 90525571 is a prime.

It is not a weakly prime, because it can be changed into another prime (90525517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45262793 + 45262794.

It is an arithmetic number, because the mean of its divisors is an integer number (45262794).

Almost surely, 2^90525587 is an apocalyptic number.

90525587 is a deficient number, since it is larger than the sum of its proper divisors (1).

90525587 is an equidigital number, since it uses as much as digits as its factorization.

90525587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126000, while the sum is 41.

The square root of 90525587 is about 9514.4935230416. The cubic root of 90525587 is about 449.0111405413.

The spelling of 90525587 in words is "ninety million, five hundred twenty-five thousand, five hundred eighty-seven".