90223272050 has 54 divisors (see below), whose sum is σ = 169826081607. Its totient is φ = 35661970080.

The previous prime is 90223272001. The next prime is 90223272121. The reversal of 90223272050 is 5027232209.

It can be written as a sum of positive squares in 5 ways, for example, as 47973702841 + 42249569209 = 219029^2 + 205547^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=212395.

It is a super-2 number, since 2×90223272050² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90223271998 and 90223272016.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 227262452 + ... + 227262848.

Almost surely, 2^90223272050 is an apocalyptic number.

90223272050 is a deficient number, since it is larger than the sum of its proper divisors (79602809557).

90223272050 is an equidigital number, since it uses as much as digits as its factorization.

90223272050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020 (or 511 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

Multiplying 90223272050 by its sum of digits (32), we get a square (2887144705600 = 1699160²).

The spelling of 90223272050 in words is "ninety billion, two hundred twenty-three million, two hundred seventy-two thousand, fifty".