159490531 has 2 divisors, whose sum is σ = 159490532. Its totient is φ = 159490530.

The previous prime is 159490523. The next prime is 159490543. The reversal of 159490531 is 135094951.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (135094951) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 159490531 - 2³ = 159490523 is a prime.

It is a super-2 number, since 2×159490531² = 50874458957323922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (159490561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79745265 + 79745266.

It is an arithmetic number, because the mean of its divisors is an integer number (79745266).

Almost surely, 2^159490531 is an apocalyptic number.

159490531 is a deficient number, since it is larger than the sum of its proper divisors (1).

159490531 is an equidigital number, since it uses as much as digits as its factorization.

159490531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24300, while the sum is 37.

The square root of 159490531 is about 12628.9560534511. The cubic root of 159490531 is about 542.3066974671.

The spelling of 159490531 in words is "one hundred fifty-nine million, four hundred ninety thousand, five hundred thirty-one".