90526405 has 8 divisors (see below), whose sum is σ = 108754200. Its totient is φ = 72339456.

The previous prime is 90526369. The next prime is 90526421. The reversal of 90526405 is 50462509.

It can be written as a sum of positive squares in 4 ways, for example, as 9400356 + 81126049 = 3066^2 + 9007^2 .

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 90526405 - 2⁹ = 90525893 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5100 + ... + 14389.

It is an arithmetic number, because the mean of its divisors is an integer number (13594275).

Almost surely, 2^90526405 is an apocalyptic number.

It is an amenable number.

90526405 is a deficient number, since it is larger than the sum of its proper divisors (18227795).

90526405 is a wasteful number, since it uses less digits than its factorization.

90526405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20423.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 90526405 is about 9514.5365099935. The cubic root of 90526405 is about 449.0124929767.

The spelling of 90526405 in words is "ninety million, five hundred twenty-six thousand, four hundred five".