240574561 has 4 divisors (see below), whose sum is σ = 253236400. Its totient is φ = 227912724.

The previous prime is 240574553. The next prime is 240574567. The reversal of 240574561 is 165475042.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 240574561 - 2³ = 240574553 is a prime.

It is a super-2 number, since 2×240574561² = 115752238800685442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240574567) 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 3 ways as a sum of consecutive naturals, for example, 6330891 + ... + 6330928.

It is an arithmetic number, because the mean of its divisors is an integer number (63309100).

Almost surely, 2^240574561 is an apocalyptic number.

It is an amenable number.

240574561 is a deficient number, since it is larger than the sum of its proper divisors (12661839).

240574561 is a wasteful number, since it uses less digits than its factorization.

240574561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12661838.

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 240574561 is about 15510.4661761019. The cubic root of 240574561 is about 621.9420211463.

The spelling of 240574561 in words is "two hundred forty million, five hundred seventy-four thousand, five hundred sixty-one".