7249457 has 2 divisors, whose sum is σ = 7249458. Its totient is φ = 7249456.

The previous prime is 7249441. The next prime is 7249483. The reversal of 7249457 is 7549427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6974881 + 274576 = 2641^2 + 524^2 .

It is an emirp because it is prime and its reverse (7549427) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7249457 - 2⁴ = 7249441 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7249457.

It is not a weakly prime, because it can be changed into another prime (7249427) 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, 3624728 + 3624729.

It is an arithmetic number, because the mean of its divisors is an integer number (3624729).

Almost surely, 2^7249457 is an apocalyptic number.

It is an amenable number.

7249457 is a deficient number, since it is larger than the sum of its proper divisors (1).

7249457 is an equidigital number, since it uses as much as digits as its factorization.

7249457 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70560, while the sum is 38.

The square root of 7249457 is about 2692.4815691105. The cubic root of 7249457 is about 193.5389999889.

The spelling of 7249457 in words is "seven million, two hundred forty-nine thousand, four hundred fifty-seven".