155441563 has 2 divisors, whose sum is σ = 155441564. Its totient is φ = 155441562.

The previous prime is 155441543. The next prime is 155441581. The reversal of 155441563 is 365144551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155441563 - 2²⁵ = 121887131 is a prime.

It is not a weakly prime, because it can be changed into another prime (155441543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77720781 + 77720782.

It is an arithmetic number, because the mean of its divisors is an integer number (77720782).

Almost surely, 2^155441563 is an apocalyptic number.

155441563 is a deficient number, since it is larger than the sum of its proper divisors (1).

155441563 is an equidigital number, since it uses as much as digits as its factorization.

155441563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36000, while the sum is 34.

The square root of 155441563 is about 12467.6205829340. The cubic root of 155441563 is about 537.6781459615.

The spelling of 155441563 in words is "one hundred fifty-five million, four hundred forty-one thousand, five hundred sixty-three".