90522493 has 2 divisors, whose sum is σ = 90522494. Its totient is φ = 90522492.

The previous prime is 90522451. The next prime is 90522521. The reversal of 90522493 is 39422509.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89813529 + 708964 = 9477^2 + 842^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90522493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90522193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45261246 + 45261247.

It is an arithmetic number, because the mean of its divisors is an integer number (45261247).

Almost surely, 2^90522493 is an apocalyptic number.

It is an amenable number.

90522493 is a deficient number, since it is larger than the sum of its proper divisors (1).

90522493 is an equidigital number, since it uses as much as digits as its factorization.

90522493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 90522493 is about 9514.3309276060. The cubic root of 90522493 is about 449.0060250215.

The spelling of 90522493 in words is "ninety million, five hundred twenty-two thousand, four hundred ninety-three".