7494457 has 2 divisors, whose sum is σ = 7494458. Its totient is φ = 7494456.

The previous prime is 7494439. The next prime is 7494469. The reversal of 7494457 is 7544947.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4791721 + 2702736 = 2189^2 + 1644^2 .

It is an emirp because it is prime and its reverse (7544947) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7494457 - 2⁷ = 7494329 is a prime.

It is not a weakly prime, because it can be changed into another prime (7494407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3747228 + 3747229.

It is an arithmetic number, because the mean of its divisors is an integer number (3747229).

Almost surely, 2^7494457 is an apocalyptic number.

It is an amenable number.

7494457 is a deficient number, since it is larger than the sum of its proper divisors (1).

7494457 is an equidigital number, since it uses as much as digits as its factorization.

7494457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 40.

The square root of 7494457 is about 2737.6005917591. The cubic root of 7494457 is about 195.6951477041.

The spelling of 7494457 in words is "seven million, four hundred ninety-four thousand, four hundred fifty-seven".