90810361 has 2 divisors, whose sum is σ = 90810362. Its totient is φ = 90810360.

The previous prime is 90810353. The next prime is 90810427. The reversal of 90810361 is 16301809.

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., 48038761 + 42771600 = 6931^2 + 6540^2 .

It is a cyclic number.

It is not a de Polignac number, because 90810361 - 2³ = 90810353 is a prime.

It is not a weakly prime, because it can be changed into another prime (90810331) 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, 45405180 + 45405181.

It is an arithmetic number, because the mean of its divisors is an integer number (45405181).

Almost surely, 2^90810361 is an apocalyptic number.

It is an amenable number.

90810361 is a deficient number, since it is larger than the sum of its proper divisors (1).

90810361 is an equidigital number, since it uses as much as digits as its factorization.

90810361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 90810361 is about 9529.4470458679. The cubic root of 90810361 is about 449.4814784728.

The spelling of 90810361 in words is "ninety million, eight hundred ten thousand, three hundred sixty-one".