9021245 has 4 divisors (see below), whose sum is σ = 10825500. Its totient is φ = 7216992.

The previous prime is 9021241. The next prime is 9021251. The reversal of 9021245 is 5421209.

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 6692569 + 2328676 = 2587^2 + 1526^2 .

It is a cyclic number.

It is not a de Polignac number, because 9021245 - 2² = 9021241 is a prime.

It is a super-2 number, since 2×9021245² = 162765722700050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 9021245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9021241) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 902120 + ... + 902129.

It is an arithmetic number, because the mean of its divisors is an integer number (2706375).

Almost surely, 2^9021245 is an apocalyptic number.

It is an amenable number.

9021245 is a deficient number, since it is larger than the sum of its proper divisors (1804255).

9021245 is a wasteful number, since it uses less digits than its factorization.

9021245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1804254.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 9021245 is about 3003.5387462125. The cubic root of 9021245 is about 208.1719254692.

The spelling of 9021245 in words is "nine million, twenty-one thousand, two hundred forty-five".