90313073 has 2 divisors, whose sum is σ = 90313074. Its totient is φ = 90313072.

The previous prime is 90313051. The next prime is 90313087. The reversal of 90313073 is 37031309.

90313073 is nontrivially palindromic in base 14.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87011584 + 3301489 = 9328^2 + 1817^2 .

It is a cyclic number.

It is not a de Polignac number, because 90313073 - 2¹⁰ = 90312049 is a prime.

It is equal to p_5234156 and since 90313073 and 5234156 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (90315073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45156536 + 45156537.

It is an arithmetic number, because the mean of its divisors is an integer number (45156537).

Almost surely, 2^90313073 is an apocalyptic number.

It is an amenable number.

90313073 is a deficient number, since it is larger than the sum of its proper divisors (1).

90313073 is an equidigital number, since it uses as much as digits as its factorization.

90313073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1701, while the sum is 26.

The square root of 90313073 is about 9503.3190517840. The cubic root of 90313073 is about 448.6595054472.

The spelling of 90313073 in words is "ninety million, three hundred thirteen thousand, seventy-three".