7243445 has 32 divisors (see below), whose sum is σ = 10285056. Its totient is φ = 4838400.

The previous prime is 7243441. The next prime is 7243451. The reversal of 7243445 is 5443427.

7243445 = T₆₄₆ + T₆₄₇ + ... + T₆₇₈.

7243445 = 116² + 117² + ... + 285².

It is not a de Polignac number, because 7243445 - 2² = 7243441 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7243441) 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 in 31 ways as a sum of consecutive naturals, for example, 56972 + ... + 57098.

It is an arithmetic number, because the mean of its divisors is an integer number (321408).

Almost surely, 2^7243445 is an apocalyptic number.

It is an amenable number.

7243445 is a deficient number, since it is larger than the sum of its proper divisors (3041611).

7243445 is a wasteful number, since it uses less digits than its factorization.

7243445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221.

The product of its digits is 13440, while the sum is 29.

The square root of 7243445 is about 2691.3648953644. The cubic root of 7243445 is about 193.4854843364.

The spelling of 7243445 in words is "seven million, two hundred forty-three thousand, four hundred forty-five".