7455649 has 2 divisors, whose sum is σ = 7455650. Its totient is φ = 7455648.

The previous prime is 7455631. The next prime is 7455659. The reversal of 7455649 is 9465547.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7290000 + 165649 = 2700^2 + 407^2 .

It is a cyclic number.

It is not a de Polignac number, because 7455649 - 2¹¹ = 7453601 is a prime.

It is a super-2 number, since 2×7455649² = 111173404022402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7455629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3727824 + 3727825.

It is an arithmetic number, because the mean of its divisors is an integer number (3727825).

Almost surely, 2^7455649 is an apocalyptic number.

It is an amenable number.

7455649 is a deficient number, since it is larger than the sum of its proper divisors (1).

7455649 is an equidigital number, since it uses as much as digits as its factorization.

7455649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 151200, while the sum is 40.

The square root of 7455649 is about 2730.5034334349. The cubic root of 7455649 is about 195.3567783430.

The spelling of 7455649 in words is "seven million, four hundred fifty-five thousand, six hundred forty-nine".