159521455 has 16 divisors (see below), whose sum is σ = 203048640. Its totient is φ = 119895552.

The previous prime is 159521441. The next prime is 159521471. The reversal of 159521455 is 554125951.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 159521455 - 2⁹ = 159520943 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 58942 + ... + 61588.

It is an arithmetic number, because the mean of its divisors is an integer number (12690540).

Almost surely, 2^159521455 is an apocalyptic number.

159521455 is a deficient number, since it is larger than the sum of its proper divisors (43527185).

159521455 is a wasteful number, since it uses less digits than its factorization.

159521455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3378.

The product of its digits is 45000, while the sum is 37.

The square root of 159521455 is about 12630.1803233366. The cubic root of 159521455 is about 542.3417449157.

The spelling of 159521455 in words is "one hundred fifty-nine million, five hundred twenty-one thousand, four hundred fifty-five".