90454361 has 2 divisors, whose sum is σ = 90454362. Its totient is φ = 90454360.

The previous prime is 90454337. The next prime is 90454363. The reversal of 90454361 is 16345409.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50055625 + 40398736 = 7075^2 + 6356^2 .

It is an emirp because it is prime and its reverse (16345409) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90454361 - 2¹⁸ = 90192217 is a prime.

It is a Sophie Germain prime.

Together with 90454363, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (90454363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45227180 + 45227181.

It is an arithmetic number, because the mean of its divisors is an integer number (45227181).

Almost surely, 2^90454361 is an apocalyptic number.

It is an amenable number.

90454361 is a deficient number, since it is larger than the sum of its proper divisors (1).

90454361 is an equidigital number, since it uses as much as digits as its factorization.

90454361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 90454361 is about 9510.7497601398. The cubic root of 90454361 is about 448.8933482136.

The spelling of 90454361 in words is "ninety million, four hundred fifty-four thousand, three hundred sixty-one".