155735563 has 2 divisors, whose sum is σ = 155735564. Its totient is φ = 155735562.

The previous prime is 155735561. The next prime is 155735617. The reversal of 155735563 is 365537551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155735563 - 2¹ = 155735561 is a prime.

Together with 155735561, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (155735561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77867781 + 77867782.

It is an arithmetic number, because the mean of its divisors is an integer number (77867782).

Almost surely, 2^155735563 is an apocalyptic number.

155735563 is a deficient number, since it is larger than the sum of its proper divisors (1).

155735563 is an equidigital number, since it uses as much as digits as its factorization.

155735563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 236250, while the sum is 40.

The square root of 155735563 is about 12479.4055547530. The cubic root of 155735563 is about 538.0169181120.

The spelling of 155735563 in words is "one hundred fifty-five million, seven hundred thirty-five thousand, five hundred sixty-three".