240065557 has 2 divisors, whose sum is σ = 240065558. Its totient is φ = 240065556.

The previous prime is 240065543. The next prime is 240065593. The reversal of 240065557 is 755560042.

240065557 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 240064036 + 1521 = 15494^2 + 39^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240065557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240065957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120032778 + 120032779.

It is an arithmetic number, because the mean of its divisors is an integer number (120032779).

Almost surely, 2^240065557 is an apocalyptic number.

It is an amenable number.

240065557 is a deficient number, since it is larger than the sum of its proper divisors (1).

240065557 is an equidigital number, since it uses as much as digits as its factorization.

240065557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42000, while the sum is 34.

The square root of 240065557 is about 15494.0490834385. The cubic root of 240065557 is about 621.5030796066.

The spelling of 240065557 in words is "two hundred forty million, sixty-five thousand, five hundred fifty-seven".