7221077 has 2 divisors, whose sum is σ = 7221078. Its totient is φ = 7221076.

The previous prime is 7221041. The next prime is 7221079. The reversal of 7221077 is 7701227.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6120676 + 1100401 = 2474^2 + 1049^2 .

It is an emirp because it is prime and its reverse (7701227) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7221077 - 2⁶ = 7221013 is a prime.

Together with 7221079, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7221079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3610538 + 3610539.

It is an arithmetic number, because the mean of its divisors is an integer number (3610539).

Almost surely, 2^7221077 is an apocalyptic number.

It is an amenable number.

7221077 is a deficient number, since it is larger than the sum of its proper divisors (1).

7221077 is an equidigital number, since it uses as much as digits as its factorization.

7221077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1372, while the sum is 26.

The square root of 7221077 is about 2687.2061699840. The cubic root of 7221077 is about 193.2861157646.

The spelling of 7221077 in words is "seven million, two hundred twenty-one thousand, seventy-seven".