90222250 has 32 divisors (see below), whose sum is σ = 169582608. Its totient is φ = 35942400.

The previous prime is 90222239. The next prime is 90222283. The reversal of 90222250 is 5222209.

It can be written as a sum of positive squares in 8 ways, for example, as 29241 + 90193009 = 171^2 + 9497^2 .

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, 77674 + ... + 78826.

Almost surely, 2^90222250 is an apocalyptic number.

90222250 is a deficient number, since it is larger than the sum of its proper divisors (79360358).

90222250 is a wasteful number, since it uses less digits than its factorization.

90222250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1483 (or 1473 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 90222250 is about 9498.5393613966. The cubic root of 90222250 is about 448.5090574256.

Adding to 90222250 its reverse (5222209), we get a palindrome (95444459).

The spelling of 90222250 in words is "ninety million, two hundred twenty-two thousand, two hundred fifty".