238755563 has 2 divisors, whose sum is σ = 238755564. Its totient is φ = 238755562.

The previous prime is 238755557. The next prime is 238755589. The reversal of 238755563 is 365557832.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238755563 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (238755533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119377781 + 119377782.

It is an arithmetic number, because the mean of its divisors is an integer number (119377782).

Almost surely, 2^238755563 is an apocalyptic number.

238755563 is a deficient number, since it is larger than the sum of its proper divisors (1).

238755563 is an equidigital number, since it uses as much as digits as its factorization.

238755563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 756000, while the sum is 44.

The square root of 238755563 is about 15451.7171537664. The cubic root of 238755563 is about 620.3705407304.

The spelling of 238755563 in words is "two hundred thirty-eight million, seven hundred fifty-five thousand, five hundred sixty-three".