7331021 has 2 divisors, whose sum is σ = 7331022. Its totient is φ = 7331020.

The previous prime is 7331011. The next prime is 7331033. The reversal of 7331021 is 1201337.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4141225 + 3189796 = 2035^2 + 1786^2 .

It is an emirp because it is prime and its reverse (1201337) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7331021 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7331011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3665510 + 3665511.

It is an arithmetic number, because the mean of its divisors is an integer number (3665511).

Almost surely, 2^7331021 is an apocalyptic number.

It is an amenable number.

7331021 is a deficient number, since it is larger than the sum of its proper divisors (1).

7331021 is an equidigital number, since it uses as much as digits as its factorization.

7331021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126, while the sum is 17.

The square root of 7331021 is about 2707.5858250478. The cubic root of 7331021 is about 194.2621336876.

Adding to 7331021 its reverse (1201337), we get a palindrome (8532358).

The spelling of 7331021 in words is "seven million, three hundred thirty-one thousand, twenty-one".