90045533 has 2 divisors, whose sum is σ = 90045534. Its totient is φ = 90045532.

The previous prime is 90045523. The next prime is 90045547. The reversal of 90045533 is 33554009.

90045533 is nontrivially palindromic in base 14.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 65966884 + 24078649 = 8122^2 + 4907^2 .

It is an emirp because it is prime and its reverse (33554009) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90045533 - 2⁴ = 90045517 is a prime.

It is a Chen prime.

It is equal to p_5219462 and since 90045533 and 5219462 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 90045496 and 90045505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90045523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45022766 + 45022767.

It is an arithmetic number, because the mean of its divisors is an integer number (45022767).

Almost surely, 2^90045533 is an apocalyptic number.

It is an amenable number.

90045533 is a deficient number, since it is larger than the sum of its proper divisors (1).

90045533 is an equidigital number, since it uses as much as digits as its factorization.

90045533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 29.

The square root of 90045533 is about 9489.2324768656. The cubic root of 90045533 is about 448.2160366559.

The spelling of 90045533 in words is "ninety million, forty-five thousand, five hundred thirty-three".