90222457 has 4 divisors (see below), whose sum is σ = 97162660. Its totient is φ = 83282256.

The previous prime is 90222437. The next prime is 90222499. The reversal of 90222457 is 75422209.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 40717161 + 49505296 = 6381^2 + 7036^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90222457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90222437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3470082 + ... + 3470107.

It is an arithmetic number, because the mean of its divisors is an integer number (24290665).

Almost surely, 2^90222457 is an apocalyptic number.

It is an amenable number.

90222457 is a deficient number, since it is larger than the sum of its proper divisors (6940203).

90222457 is a wasteful number, since it uses less digits than its factorization.

90222457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6940202.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 90222457 is about 9498.5502578025. The cubic root of 90222457 is about 448.5094004352.

The spelling of 90222457 in words is "ninety million, two hundred twenty-two thousand, four hundred fifty-seven".