240557623 has 2 divisors, whose sum is σ = 240557624. Its totient is φ = 240557622.

The previous prime is 240557579. The next prime is 240557657. The reversal of 240557623 is 326755042.

It is an a-pointer prime, because the next prime (240557657) can be obtained adding 240557623 to its sum of digits (34).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 240557623 - 2²¹ = 238460471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (240557663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120278811 + 120278812.

It is an arithmetic number, because the mean of its divisors is an integer number (120278812).

Almost surely, 2^240557623 is an apocalyptic number.

240557623 is a deficient number, since it is larger than the sum of its proper divisors (1).

240557623 is an equidigital number, since it uses as much as digits as its factorization.

240557623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50400, while the sum is 34.

The square root of 240557623 is about 15509.9201480859. The cubic root of 240557623 is about 621.9274245612.

The spelling of 240557623 in words is "two hundred forty million, five hundred fifty-seven thousand, six hundred twenty-three".