90275461 has 2 divisors, whose sum is σ = 90275462. Its totient is φ = 90275460.

The previous prime is 90275443. The next prime is 90275477. The reversal of 90275461 is 16457209.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85840225 + 4435236 = 9265^2 + 2106^2 .

It is an emirp because it is prime and its reverse (16457209) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90275461 - 2⁵ = 90275429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90275401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45137730 + 45137731.

It is an arithmetic number, because the mean of its divisors is an integer number (45137731).

Almost surely, 2^90275461 is an apocalyptic number.

It is an amenable number.

90275461 is a deficient number, since it is larger than the sum of its proper divisors (1).

90275461 is an equidigital number, since it uses as much as digits as its factorization.

90275461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 90275461 is about 9501.3399581322. The cubic root of 90275461 is about 448.5972135260.

The spelling of 90275461 in words is "ninety million, two hundred seventy-five thousand, four hundred sixty-one".