90053213 has 2 divisors, whose sum is σ = 90053214. Its totient is φ = 90053212.

The previous prime is 90053191. The next prime is 90053219. The reversal of 90053213 is 31235009.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70930084 + 19123129 = 8422^2 + 4373^2 .

It is a cyclic number.

It is not a de Polignac number, because 90053213 - 2¹⁴ = 90036829 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90053219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45026606 + 45026607.

It is an arithmetic number, because the mean of its divisors is an integer number (45026607).

Almost surely, 2^90053213 is an apocalyptic number.

It is an amenable number.

90053213 is a deficient number, since it is larger than the sum of its proper divisors (1).

90053213 is an equidigital number, since it uses as much as digits as its factorization.

90053213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 90053213 is about 9489.6371374252. The cubic root of 90053213 is about 448.2287791029.

The spelling of 90053213 in words is "ninety million, fifty-three thousand, two hundred thirteen".