90472505 has 8 divisors (see below), whose sum is σ = 109787400. Its totient is φ = 71564416.

The previous prime is 90472483. The next prime is 90472517. The reversal of 90472505 is 50527409.

It can be written as a sum of positive squares in 4 ways, for example, as 1207801 + 89264704 = 1099^2 + 9448^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90472505 - 2⁶ = 90472441 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101210 + ... + 102099.

It is an arithmetic number, because the mean of its divisors is an integer number (13723425).

Almost surely, 2^90472505 is an apocalyptic number.

It is an amenable number.

90472505 is a deficient number, since it is larger than the sum of its proper divisors (19314895).

90472505 is a wasteful number, since it uses less digits than its factorization.

90472505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203403.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 90472505 is about 9511.7035803267. The cubic root of 90472505 is about 448.9233603151.

The spelling of 90472505 in words is "ninety million, four hundred seventy-two thousand, five hundred five".