90533073 has 4 divisors (see below), whose sum is σ = 120710768. Its totient is φ = 60355380.

The previous prime is 90533039. The next prime is 90533077. The reversal of 90533073 is 37033509.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 90533073 - 2¹⁷ = 90402001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 90533073.

It is not an unprimeable number, because it can be changed into a prime (90533077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15088843 + ... + 15088848.

It is an arithmetic number, because the mean of its divisors is an integer number (30177692).

Almost surely, 2^90533073 is an apocalyptic number.

It is an amenable number.

90533073 is a deficient number, since it is larger than the sum of its proper divisors (30177695).

90533073 is a wasteful number, since it uses less digits than its factorization.

90533073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30177694.

The product of its (nonzero) digits is 8505, while the sum is 30.

The square root of 90533073 is about 9514.8869147247. The cubic root of 90533073 is about 449.0235171701.

The spelling of 90533073 in words is "ninety million, five hundred thirty-three thousand, seventy-three".