90205058 has 4 divisors (see below), whose sum is σ = 135307590. Its totient is φ = 45102528.

The previous prime is 90204979. The next prime is 90205067. The reversal of 90205058 is 85050209.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85050209 = 661 ⋅128669.

It can be written as a sum of positive squares in only one way, i.e., 65334889 + 24870169 = 8083^2 + 4987^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 90205058.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22551263 + ... + 22551266.

Almost surely, 2^90205058 is an apocalyptic number.

90205058 is a deficient number, since it is larger than the sum of its proper divisors (45102532).

90205058 is a wasteful number, since it uses less digits than its factorization.

90205058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45102531.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 90205058 is about 9497.6343370336. The cubic root of 90205058 is about 448.4805675666.

The spelling of 90205058 in words is "ninety million, two hundred five thousand, fifty-eight".