90116501 has 2 divisors, whose sum is σ = 90116502. Its totient is φ = 90116500.

The previous prime is 90116491. The next prime is 90116527. The reversal of 90116501 is 10561109.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80820100 + 9296401 = 8990^2 + 3049^2 .

It is a cyclic number.

It is not a de Polignac number, because 90116501 - 2¹⁰ = 90115477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90116591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45058250 + 45058251.

It is an arithmetic number, because the mean of its divisors is an integer number (45058251).

Almost surely, 2^90116501 is an apocalyptic number.

It is an amenable number.

90116501 is a deficient number, since it is larger than the sum of its proper divisors (1).

90116501 is an equidigital number, since it uses as much as digits as its factorization.

90116501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 270, while the sum is 23.

The square root of 90116501 is about 9492.9711365831. The cubic root of 90116501 is about 448.3337572568. Note that the first 3 decimals are identical.

The spelling of 90116501 in words is "ninety million, one hundred sixteen thousand, five hundred one".