240809545 has 8 divisors (see below), whose sum is σ = 290245824. Its totient is φ = 191798064.

The previous prime is 240809531. The next prime is 240809549. The reversal of 240809545 is 545908042.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 240809545 - 2⁹ = 240809033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240809549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104949 + ... + 107218.

It is an arithmetic number, because the mean of its divisors is an integer number (36280728).

Almost surely, 2^240809545 is an apocalyptic number.

It is an amenable number.

240809545 is a deficient number, since it is larger than the sum of its proper divisors (49436279).

240809545 is a wasteful number, since it uses less digits than its factorization.

240809545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212399.

The product of its (nonzero) digits is 57600, while the sum is 37.

The square root of 240809545 is about 15518.0393413601. The cubic root of 240809545 is about 622.1444516190.

The spelling of 240809545 in words is "two hundred forty million, eight hundred nine thousand, five hundred forty-five".