90523133 has 2 divisors, whose sum is σ = 90523134. Its totient is φ = 90523132.

The previous prime is 90523129. The next prime is 90523151. The reversal of 90523133 is 33132509.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79619929 + 10903204 = 8923^2 + 3302^2 .

It is a cyclic number.

It is not a de Polignac number, because 90523133 - 2² = 90523129 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90523933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45261566 + 45261567.

It is an arithmetic number, because the mean of its divisors is an integer number (45261567).

Almost surely, 2^90523133 is an apocalyptic number.

It is an amenable number.

90523133 is a deficient number, since it is larger than the sum of its proper divisors (1).

90523133 is an equidigital number, since it uses as much as digits as its factorization.

90523133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2430, while the sum is 26.

The square root of 90523133 is about 9514.3645610204. The cubic root of 90523133 is about 449.0070831865.

The spelling of 90523133 in words is "ninety million, five hundred twenty-three thousand, one hundred thirty-three".