90250050 has 96 divisors (see below), whose sum is σ = 247484160. Its totient is φ = 21582400.

The previous prime is 90250031. The next prime is 90250051. The reversal of 90250050 is 5005209.

It is a junction number, because it is equal to n+sod(n) for n = 90249999 and 90250026.

It is not an unprimeable number, because it can be changed into a prime (90250051) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 136621 + ... + 137279.

It is an arithmetic number, because the mean of its divisors is an integer number (2577960).

Almost surely, 2^90250050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90250050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123742080).

90250050 is an abundant number, since it is smaller than the sum of its proper divisors (157234110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90250050 is a wasteful number, since it uses less digits than its factorization.

90250050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768 (or 763 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 90250050 is about 9500.0026315786. The cubic root of 90250050 is about 448.5551187589. Note that the first 3 decimals are identical.

Adding to 90250050 its reverse (5005209), we get a palindrome (95255259).

The spelling of 90250050 in words is "ninety million, two hundred fifty thousand, fifty".