7449545 has 4 divisors (see below), whose sum is σ = 8939460. Its totient is φ = 5959632.

The previous prime is 7449523. The next prime is 7449581. The reversal of 7449545 is 5459447.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1827904 + 5621641 = 1352^2 + 2371^2 .

It is a cyclic number.

It is not a de Polignac number, because 7449545 - 2⁸ = 7449289 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7449499 and 7449508.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 744950 + ... + 744959.

It is an arithmetic number, because the mean of its divisors is an integer number (2234865).

Almost surely, 2^7449545 is an apocalyptic number.

It is an amenable number.

7449545 is a deficient number, since it is larger than the sum of its proper divisors (1489915).

7449545 is a wasteful number, since it uses less digits than its factorization.

7449545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1489914.

The product of its digits is 100800, while the sum is 38.

The square root of 7449545 is about 2729.3854619676. The cubic root of 7449545 is about 195.3034503967.

The spelling of 7449545 in words is "seven million, four hundred forty-nine thousand, five hundred forty-five".