90271603 has 4 divisors (see below), whose sum is σ = 95022760. Its totient is φ = 85520448.

The previous prime is 90271589. The next prime is 90271609. The reversal of 90271603 is 30617209.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90271603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90271609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2375550 + ... + 2375587.

It is an arithmetic number, because the mean of its divisors is an integer number (23755690).

Almost surely, 2^90271603 is an apocalyptic number.

90271603 is a deficient number, since it is larger than the sum of its proper divisors (4751157).

90271603 is a wasteful number, since it uses less digits than its factorization.

90271603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4751156.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 90271603 is about 9501.1369319677. The cubic root of 90271603 is about 448.5908230382.

The spelling of 90271603 in words is "ninety million, two hundred seventy-one thousand, six hundred three".