90355193 has 4 divisors (see below), whose sum is σ = 90473460. Its totient is φ = 90236928.

The previous prime is 90355189. The next prime is 90355253. The reversal of 90355193 is 39155309.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30880249 + 59474944 = 5557^2 + 7712^2 .

It is a cyclic number.

It is not a de Polignac number, because 90355193 - 2² = 90355189 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90355123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57980 + ... + 59517.

It is an arithmetic number, because the mean of its divisors is an integer number (22618365).

Almost surely, 2^90355193 is an apocalyptic number.

It is an amenable number.

90355193 is a deficient number, since it is larger than the sum of its proper divisors (118267).

90355193 is a wasteful number, since it uses less digits than its factorization.

90355193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118266.

The product of its (nonzero) digits is 18225, while the sum is 35.

The square root of 90355193 is about 9505.5348613321. The cubic root of 90355193 is about 448.7292428643.

The spelling of 90355193 in words is "ninety million, three hundred fifty-five thousand, one hundred ninety-three".