159542545 has 4 divisors (see below), whose sum is σ = 191451060. Its totient is φ = 127634032.

The previous prime is 159542533. The next prime is 159542567. The reversal of 159542545 is 545245951.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 545245951 = 89 ⋅6126359.

It can be written as a sum of positive squares in 2 ways, for example, as 96196864 + 63345681 = 9808^2 + 7959^2 .

It is a cyclic number.

It is not a de Polignac number, because 159542545 - 2⁷ = 159542417 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 159542498 and 159542507.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15954250 + ... + 15954259.

It is an arithmetic number, because the mean of its divisors is an integer number (47862765).

Almost surely, 2^159542545 is an apocalyptic number.

It is an amenable number.

159542545 is a deficient number, since it is larger than the sum of its proper divisors (31908515).

159542545 is an equidigital number, since it uses as much as digits as its factorization.

159542545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31908514.

The product of its digits is 180000, while the sum is 40.

The square root of 159542545 is about 12631.0152006876. The cubic root of 159542545 is about 542.3656444874.

The spelling of 159542545 in words is "one hundred fifty-nine million, five hundred forty-two thousand, five hundred forty-five".