90053191 has 2 divisors, whose sum is σ = 90053192. Its totient is φ = 90053190.

The previous prime is 90053167. The next prime is 90053213. The reversal of 90053191 is 19135009.

It is a strong prime.

It is an emirp because it is prime and its reverse (19135009) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90053191 - 2²¹ = 87956039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90053291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45026595 + 45026596.

It is an arithmetic number, because the mean of its divisors is an integer number (45026596).

Almost surely, 2^90053191 is an apocalyptic number.

90053191 is a deficient number, since it is larger than the sum of its proper divisors (1).

90053191 is an equidigital number, since it uses as much as digits as its factorization.

90053191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1215, while the sum is 28.

The square root of 90053191 is about 9489.6359782660. The cubic root of 90053191 is about 448.2287426022.

The spelling of 90053191 in words is "ninety million, fifty-three thousand, one hundred ninety-one".