240815057 has 12 divisors (see below), whose sum is σ = 280699236. Its totient is φ = 205994880.

The previous prime is 240815041. The next prime is 240815077. The reversal of 240815057 is 750518042.

It can be written as a sum of positive squares in 2 ways, for example, as 118026496 + 122788561 = 10864^2 + 11081^2 .

It is not a de Polignac number, because 240815057 - 2⁴ = 240815041 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (240815027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20813 + ... + 30245.

It is an arithmetic number, because the mean of its divisors is an integer number (23391603).

Almost surely, 2^240815057 is an apocalyptic number.

It is an amenable number.

240815057 is a deficient number, since it is larger than the sum of its proper divisors (39884179).

240815057 is an equidigital number, since it uses as much as digits as its factorization.

240815057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9968 (or 9961 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 240815057 is about 15518.2169400998. The cubic root of 240815057 is about 622.1491984326.

The spelling of 240815057 in words is "two hundred forty million, eight hundred fifteen thousand, fifty-seven".