90512206 has 4 divisors (see below), whose sum is σ = 135768312. Its totient is φ = 45256102.

The previous prime is 90512179. The next prime is 90512221. The reversal of 90512206 is 60221509.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22628050 + ... + 22628053.

It is an arithmetic number, because the mean of its divisors is an integer number (33942078).

Almost surely, 2^90512206 is an apocalyptic number.

90512206 is a deficient number, since it is larger than the sum of its proper divisors (45256106).

90512206 is a wasteful number, since it uses less digits than its factorization.

90512206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45256105.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 90512206 is about 9513.7903067074. The cubic root of 90512206 is about 448.9890159895.

The spelling of 90512206 in words is "ninety million, five hundred twelve thousand, two hundred six".