90885461 has 2 divisors, whose sum is σ = 90885462. Its totient is φ = 90885460.

The previous prime is 90885427. The next prime is 90885463. The reversal of 90885461 is 16458809.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67749361 + 23136100 = 8231^2 + 4810^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90885461 is a prime.

It is a Sophie Germain prime.

Together with 90885463, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90885463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45442730 + 45442731.

It is an arithmetic number, because the mean of its divisors is an integer number (45442731).

Almost surely, 2^90885461 is an apocalyptic number.

It is an amenable number.

90885461 is a deficient number, since it is larger than the sum of its proper divisors (1).

90885461 is an equidigital number, since it uses as much as digits as its factorization.

90885461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 90885461 is about 9533.3866490351. The cubic root of 90885461 is about 449.6053511144.

The spelling of 90885461 in words is "ninety million, eight hundred eighty-five thousand, four hundred sixty-one".