90248045 has 16 divisors (see below), whose sum is σ = 110108592. Its totient is φ = 71001600.

The previous prime is 90248033. The next prime is 90248051. The reversal of 90248045 is 54084209.

It can be written as a sum of positive squares in 8 ways, for example, as 42954916 + 47293129 = 6554^2 + 6877^2 .

It is a de Polignac number, because none of the positive numbers 2^k-90248045 is a prime.

It is a Duffinian number.

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 15 ways as a sum of consecutive naturals, for example, 86849 + ... + 87881.

It is an arithmetic number, because the mean of its divisors is an integer number (6881787).

Almost surely, 2^90248045 is an apocalyptic number.

It is an amenable number.

90248045 is a deficient number, since it is larger than the sum of its proper divisors (19860547).

90248045 is a wasteful number, since it uses less digits than its factorization.

90248045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 90248045 is about 9499.8971047059. The cubic root of 90248045 is about 448.5517970260.

The spelling of 90248045 in words is "ninety million, two hundred forty-eight thousand, forty-five".