155552563 has 16 divisors (see below), whose sum is σ = 168030720. Its totient is φ = 143535456.

The previous prime is 155552531. The next prime is 155552581. The reversal of 155552563 is 365255551.

It is a cyclic number.

It is not a de Polignac number, because 155552563 - 2⁵ = 155552531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155552503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 332856 + ... + 333322.

It is an arithmetic number, because the mean of its divisors is an integer number (10501920).

Almost surely, 2^155552563 is an apocalyptic number.

155552563 is a deficient number, since it is larger than the sum of its proper divisors (12478157).

155552563 is a wasteful number, since it uses less digits than its factorization.

155552563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906.

The product of its digits is 112500, while the sum is 37.

The square root of 155552563 is about 12472.0713195523. The cubic root of 155552563 is about 537.8060998850.

The spelling of 155552563 in words is "one hundred fifty-five million, five hundred fifty-two thousand, five hundred sixty-three".