90201277 has 2 divisors, whose sum is σ = 90201278. Its totient is φ = 90201276.

The previous prime is 90201259. The next prime is 90201313. The reversal of 90201277 is 77210209.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48288601 + 41912676 = 6949^2 + 6474^2 .

It is a cyclic number.

It is not a de Polignac number, because 90201277 - 2⁷ = 90201149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90201217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45100638 + 45100639.

It is an arithmetic number, because the mean of its divisors is an integer number (45100639).

Almost surely, 2^90201277 is an apocalyptic number.

It is an amenable number.

90201277 is a deficient number, since it is larger than the sum of its proper divisors (1).

90201277 is an equidigital number, since it uses as much as digits as its factorization.

90201277 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 90201277 is about 9497.4352853810. The cubic root of 90201277 is about 448.4743013670.

The spelling of 90201277 in words is "ninety million, two hundred one thousand, two hundred seventy-seven".