90555727 has 2 divisors, whose sum is σ = 90555728. Its totient is φ = 90555726.

The previous prime is 90555713. The next prime is 90555733. The reversal of 90555727 is 72755509.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90555727 - 2⁷ = 90555599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90555727.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90555797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45277863 + 45277864.

It is an arithmetic number, because the mean of its divisors is an integer number (45277864).

Almost surely, 2^90555727 is an apocalyptic number.

90555727 is a deficient number, since it is larger than the sum of its proper divisors (1).

90555727 is an equidigital number, since it uses as much as digits as its factorization.

90555727 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 110250, while the sum is 40.

The square root of 90555727 is about 9516.0772905646. The cubic root of 90555727 is about 449.0609669479.

The spelling of 90555727 in words is "ninety million, five hundred fifty-five thousand, seven hundred twenty-seven".