7045921 has 8 divisors (see below), whose sum is σ = 7227584. Its totient is φ = 6866640.

The previous prime is 7045919. The next prime is 7045949. The reversal of 7045921 is 1295407.

It is a happy number.

7045921 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7045921 - 2¹ = 7045919 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7045921.

It is not an unprimeable number, because it can be changed into a prime (7045901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6391 + ... + 7411.

It is an arithmetic number, because the mean of its divisors is an integer number (903448).

Almost surely, 2^7045921 is an apocalyptic number.

It is an amenable number.

7045921 is a deficient number, since it is larger than the sum of its proper divisors (181663).

7045921 is a wasteful number, since it uses less digits than its factorization.

7045921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 7045921 is about 2654.4153781954. The cubic root of 7045921 is about 191.7105102809.

The spelling of 7045921 in words is "seven million, forty-five thousand, nine hundred twenty-one".