90117050 has 24 divisors (see below), whose sum is σ = 168293916. Its totient is φ = 35901440.

The previous prime is 90117037. The next prime is 90117073. The reversal of 90117050 is 5071109.

It is a Cunningham number, because it is equal to 9493²+1.

It can be written as a sum of positive squares in 6 ways, for example, as 75881521 + 14235529 = 8711^2 + 3773^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9344 + ... + 16356.

Almost surely, 2^90117050 is an apocalyptic number.

90117050 is a deficient number, since it is larger than the sum of its proper divisors (78176866).

90117050 is a wasteful number, since it uses less digits than its factorization.

90117050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7282 (or 7277 counting only the distinct ones).

The product of its (nonzero) digits is 315, while the sum is 23.

The square root of 90117050 is about 9493.0000526704. Note that the first 4 decimals coincide. The cubic root of 90117050 is about 448.3346676884.

Adding to 90117050 its reverse (5071109), we get a palindrome (95188159).

It can be divided in two parts, 9011 and 7050, that added together give a palindrome (16061).

The spelling of 90117050 in words is "ninety million, one hundred seventeen thousand, fifty".