90127517 has 2 divisors, whose sum is σ = 90127518. Its totient is φ = 90127516.

The previous prime is 90127483. The next prime is 90127519. The reversal of 90127517 is 71572109.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89226916 + 900601 = 9446^2 + 949^2 .

It is a cyclic number.

It is not a de Polignac number, because 90127517 - 2¹² = 90123421 is a prime.

Together with 90127519, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90127519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45063758 + 45063759.

It is an arithmetic number, because the mean of its divisors is an integer number (45063759).

Almost surely, 2^90127517 is an apocalyptic number.

It is an amenable number.

90127517 is a deficient number, since it is larger than the sum of its proper divisors (1).

90127517 is an equidigital number, since it uses as much as digits as its factorization.

90127517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4410, while the sum is 32.

The square root of 90127517 is about 9493.5513376186. The cubic root of 90127517 is about 448.3520248822.

The spelling of 90127517 in words is "ninety million, one hundred twenty-seven thousand, five hundred seventeen".