240575457 has 4 divisors (see below), whose sum is σ = 320767280. Its totient is φ = 160383636.

The previous prime is 240575453. The next prime is 240575519. The reversal of 240575457 is 754575042.

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 not a de Polignac number, because 240575457 - 2² = 240575453 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (240575453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40095907 + ... + 40095912.

It is an arithmetic number, because the mean of its divisors is an integer number (80191820).

Almost surely, 2^240575457 is an apocalyptic number.

It is an amenable number.

240575457 is a deficient number, since it is larger than the sum of its proper divisors (80191823).

240575457 is an equidigital number, since it uses as much as digits as its factorization.

240575457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80191822.

The product of its (nonzero) digits is 196000, while the sum is 39.

The square root of 240575457 is about 15510.4950597974. The cubic root of 240575457 is about 621.9427932692.

The spelling of 240575457 in words is "two hundred forty million, five hundred seventy-five thousand, four hundred fifty-seven".