155288563 has 2 divisors, whose sum is σ = 155288564. Its totient is φ = 155288562.

The previous prime is 155288537. The next prime is 155288603. The reversal of 155288563 is 365882551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155288563 - 2¹³ = 155280371 is a prime.

It is a super-2 number, since 2×155288563² = 48229075597209938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (155288363) 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 as a sum of consecutive naturals, namely, 77644281 + 77644282.

It is an arithmetic number, because the mean of its divisors is an integer number (77644282).

Almost surely, 2^155288563 is an apocalyptic number.

155288563 is a deficient number, since it is larger than the sum of its proper divisors (1).

155288563 is an equidigital number, since it uses as much as digits as its factorization.

155288563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288000, while the sum is 43.

The square root of 155288563 is about 12461.4831781775. The cubic root of 155288563 is about 537.5016771536.

The spelling of 155288563 in words is "one hundred fifty-five million, two hundred eighty-eight thousand, five hundred sixty-three".