90512 has 10 divisors (see below), whose sum is σ = 175398. Its totient is φ = 45248.

The previous prime is 90511. The next prime is 90523. The reversal of 90512 is 21509.

It can be written as a sum of positive squares in only one way, i.e., 59536 + 30976 = 244^2 + 176^2 .

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2813 + ... + 2844.

2⁹⁰⁵¹² is an apocalyptic number.

It is an amenable number.

90512 is a deficient number, since it is larger than the sum of its proper divisors (84886).

90512 is a wasteful number, since it uses less digits than its factorization.

90512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5665 (or 5659 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 90512 is about 300.8521231436. The cubic root of 90512 is about 44.8988675366.

The spelling of 90512 in words is "ninety thousand, five hundred twelve".