90261265 has 8 divisors (see below), whose sum is σ = 109307880. Its totient is φ = 71546112.

The previous prime is 90261221. The next prime is 90261277. The reversal of 90261265 is 56216209.

It can be written as a sum of positive squares in 4 ways, for example, as 37015056 + 53246209 = 6084^2 + 7297^2 .

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 90261265 - 2¹¹ = 90259217 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82264 + ... + 83353.

It is an arithmetic number, because the mean of its divisors is an integer number (13663485).

Almost surely, 2^90261265 is an apocalyptic number.

It is an amenable number.

90261265 is a deficient number, since it is larger than the sum of its proper divisors (19046615).

90261265 is a wasteful number, since it uses less digits than its factorization.

90261265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165731.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 90261265 is about 9500.5928762367. The cubic root of 90261265 is about 448.5736980184.

The spelling of 90261265 in words is "ninety million, two hundred sixty-one thousand, two hundred sixty-five".