7210901 has 2 divisors, whose sum is σ = 7210902. Its totient is φ = 7210900.

The previous prime is 7210897. The next prime is 7210909. The reversal of 7210901 is 1090127.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5635876 + 1575025 = 2374^2 + 1255^2 .

It is an emirp because it is prime and its reverse (1090127) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7210901 - 2² = 7210897 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7210909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3605450 + 3605451.

It is an arithmetic number, because the mean of its divisors is an integer number (3605451).

Almost surely, 2^7210901 is an apocalyptic number.

It is an amenable number.

7210901 is a deficient number, since it is larger than the sum of its proper divisors (1).

7210901 is an equidigital number, since it uses as much as digits as its factorization.

7210901 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 20.

The square root of 7210901 is about 2685.3120861457. The cubic root of 7210901 is about 193.1952796307.

It can be divided in two parts, 7210 and 901, that multiplied together give a triangular number (6496210 = T₃₆₀₄).

The spelling of 7210901 in words is "seven million, two hundred ten thousand, nine hundred one".