7205021 has 8 divisors (see below), whose sum is σ = 7581600. Its totient is φ = 6837040.

The previous prime is 7204997. The next prime is 7205039. The reversal of 7205021 is 1205027.

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

It is a de Polignac number, because none of the positive numbers 2^k-7205021 is a prime.

It is a super-2 number, since 2×7205021² = 103824655220882, which contains 22 as substring.

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 (7205041) 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, 395 + ... + 3816.

It is an arithmetic number, because the mean of its divisors is an integer number (947700).

Almost surely, 2^7205021 is an apocalyptic number.

It is an amenable number.

7205021 is a deficient number, since it is larger than the sum of its proper divisors (376579).

7205021 is a wasteful number, since it uses less digits than its factorization.

7205021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4299.

The product of its (nonzero) digits is 140, while the sum is 17.

The square root of 7205021 is about 2684.2170180520. The cubic root of 7205021 is about 193.1427528078.

The spelling of 7205021 in words is "seven million, two hundred five thousand, twenty-one".