9055421 has 4 divisors (see below), whose sum is σ = 9226332. Its totient is φ = 8884512.

The previous prime is 9055391. The next prime is 9055429. The reversal of 9055421 is 1245509.

9055421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 7778521 + 1276900 = 2789^2 + 1130^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9055421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9055429) 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, 85376 + ... + 85481.

It is an arithmetic number, because the mean of its divisors is an integer number (2306583).

Almost surely, 2^9055421 is an apocalyptic number.

It is an amenable number.

9055421 is a deficient number, since it is larger than the sum of its proper divisors (170911).

9055421 is a wasteful number, since it uses less digits than its factorization.

9055421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170910.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 9055421 is about 3009.2226570993. Note that the first 3 decimals coincide. The cubic root of 9055421 is about 208.4344730606.

The spelling of 9055421 in words is "nine million, fifty-five thousand, four hundred twenty-one".