7321404457 has 2 divisors, whose sum is σ = 7321404458. Its totient is φ = 7321404456.

The previous prime is 7321404449. The next prime is 7321404511. The reversal of 7321404457 is 7544041237.

7321404457 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4121126416 + 3200278041 = 64196^2 + 56571^2 .

It is a cyclic number.

It is not a de Polignac number, because 7321404457 - 2³ = 7321404449 is a prime.

It is not a weakly prime, because it can be changed into another prime (7321404427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3660702228 + 3660702229.

It is an arithmetic number, because the mean of its divisors is an integer number (3660702229).

Almost surely, 2^7321404457 is an apocalyptic number.

It is an amenable number.

7321404457 is a deficient number, since it is larger than the sum of its proper divisors (1).

7321404457 is an equidigital number, since it uses as much as digits as its factorization.

7321404457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94080, while the sum is 37.

The square root of 7321404457 is about 85565.2058783242. The cubic root of 7321404457 is about 1941.7715472836.

It can be divided in two parts, 7321 and 404457, that added together give a triangular number (411778 = T₉₀₇).

The spelling of 7321404457 in words is "seven billion, three hundred twenty-one million, four hundred four thousand, four hundred fifty-seven".