159133531 has 8 divisors (see below), whose sum is σ = 168480720. Its totient is φ = 149883552.

The previous prime is 159133529. The next prime is 159133537. The reversal of 159133531 is 135331951.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 159133531 - 2¹ = 159133529 is a prime.

It is a super-2 number, since 2×159133531² = 50646961377055922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 159133493 and 159133502.

It is not an unprimeable number, because it can be changed into a prime (159133537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20920 + ... + 27493.

It is an arithmetic number, because the mean of its divisors is an integer number (21060090).

Almost surely, 2^159133531 is an apocalyptic number.

159133531 is a deficient number, since it is larger than the sum of its proper divisors (9347189).

159133531 is a wasteful number, since it uses less digits than its factorization.

159133531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48605.

The product of its digits is 6075, while the sum is 31.

The square root of 159133531 is about 12614.8139502729. The cubic root of 159133531 is about 541.9017661686.

The spelling of 159133531 in words is "one hundred fifty-nine million, one hundred thirty-three thousand, five hundred thirty-one".