90597285 has 20 divisors (see below), whose sum is σ = 162404748. Its totient is φ = 48318336.

The previous prime is 90597277. The next prime is 90597313. The reversal of 90597285 is 58279509.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 39917124 + 50680161 = 6318^2 + 7119^2 .

It is not a de Polignac number, because 90597285 - 2³ = 90597277 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 90597285.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 111444 + ... + 112253.

Almost surely, 2^90597285 is an apocalyptic number.

It is an amenable number.

90597285 is a deficient number, since it is larger than the sum of its proper divisors (71807463).

90597285 is a wasteful number, since it uses less digits than its factorization.

90597285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223714 (or 223705 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 45.

The square root of 90597285 is about 9518.2606079052. The cubic root of 90597285 is about 449.1296510691.

The spelling of 90597285 in words is "ninety million, five hundred ninety-seven thousand, two hundred eighty-five".