90236501 has 2 divisors, whose sum is σ = 90236502. Its totient is φ = 90236500.

The previous prime is 90236431. The next prime is 90236519. The reversal of 90236501 is 10563209.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81884401 + 8352100 = 9049^2 + 2890^2 .

It is an emirp because it is prime and its reverse (10563209) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90236501 - 2¹⁰ = 90235477 is a prime.

It is a super-2 number, since 2×90236501² = 16285252225446002, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90236551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45118250 + 45118251.

It is an arithmetic number, because the mean of its divisors is an integer number (45118251).

Almost surely, 2^90236501 is an apocalyptic number.

It is an amenable number.

90236501 is a deficient number, since it is larger than the sum of its proper divisors (1).

90236501 is an equidigital number, since it uses as much as digits as its factorization.

90236501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 90236501 is about 9499.2894997468. The cubic root of 90236501 is about 448.5326708398.

The spelling of 90236501 in words is "ninety million, two hundred thirty-six thousand, five hundred one".