240348557 has 2 divisors, whose sum is σ = 240348558. Its totient is φ = 240348556.

The previous prime is 240348539. The next prime is 240348583. The reversal of 240348557 is 755843042.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126585001 + 113763556 = 11251^2 + 10666^2 .

It is a cyclic number.

It is not a de Polignac number, because 240348557 - 2²² = 236154253 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 240348557.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240308557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120174278 + 120174279.

It is an arithmetic number, because the mean of its divisors is an integer number (120174279).

Almost surely, 2^240348557 is an apocalyptic number.

It is an amenable number.

240348557 is a deficient number, since it is larger than the sum of its proper divisors (1).

240348557 is an equidigital number, since it uses as much as digits as its factorization.

240348557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 134400, while the sum is 38.

The square root of 240348557 is about 15503.1789320771. The cubic root of 240348557 is about 621.7472022331.

The spelling of 240348557 in words is "two hundred forty million, three hundred forty-eight thousand, five hundred fifty-seven".