90497357 has 2 divisors, whose sum is σ = 90497358. Its totient is φ = 90497356.

The previous prime is 90497353. The next prime is 90497383. The reversal of 90497357 is 75379409.

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., 89661961 + 835396 = 9469^2 + 914^2 .

It is a cyclic number.

It is not a de Polignac number, because 90497357 - 2² = 90497353 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90497353) 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, 45248678 + 45248679.

It is an arithmetic number, because the mean of its divisors is an integer number (45248679).

Almost surely, 2^90497357 is an apocalyptic number.

It is an amenable number.

90497357 is a deficient number, since it is larger than the sum of its proper divisors (1).

90497357 is an equidigital number, since it uses as much as digits as its factorization.

90497357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 238140, while the sum is 44.

The square root of 90497357 is about 9513.0098812100. The cubic root of 90497357 is about 448.9644616492.

The spelling of 90497357 in words is "ninety million, four hundred ninety-seven thousand, three hundred fifty-seven".