159581955 has 32 divisors (see below), whose sum is σ = 283852800. Its totient is φ = 76026240.

The previous prime is 159581927. The next prime is 159581957. The reversal of 159581955 is 559185951.

It is not a de Polignac number, because 159581955 - 2⁵ = 159581923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (159581957) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7155 + ... + 19244.

It is an arithmetic number, because the mean of its divisors is an integer number (8870400).

Almost surely, 2^159581955 is an apocalyptic number.

159581955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

159581955 is a deficient number, since it is larger than the sum of its proper divisors (124270845).

159581955 is a wasteful number, since it uses less digits than its factorization.

159581955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26451.

The product of its digits is 405000, while the sum is 48.

The square root of 159581955 is about 12632.5751531507. The cubic root of 159581955 is about 542.4102989719.

The spelling of 159581955 in words is "one hundred fifty-nine million, five hundred eighty-one thousand, nine hundred fifty-five".