90453217 has 2 divisors, whose sum is σ = 90453218. Its totient is φ = 90453216.

The previous prime is 90453211. The next prime is 90453229. The reversal of 90453217 is 71235409.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55890576 + 34562641 = 7476^2 + 5879^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90453217 is a prime.

It is not a weakly prime, because it can be changed into another prime (90453211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45226608 + 45226609.

It is an arithmetic number, because the mean of its divisors is an integer number (45226609).

Almost surely, 2^90453217 is an apocalyptic number.

It is an amenable number.

90453217 is a deficient number, since it is larger than the sum of its proper divisors (1).

90453217 is an equidigital number, since it uses as much as digits as its factorization.

90453217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 90453217 is about 9510.6896174778. The cubic root of 90453217 is about 448.8914557817.

The spelling of 90453217 in words is "ninety million, four hundred fifty-three thousand, two hundred seventeen".