158979545 has 8 divisors (see below), whose sum is σ = 190844424. Its totient is φ = 127137664.

The previous prime is 158979539. The next prime is 158979547. The reversal of 158979545 is 545979851.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 3952144 + 155027401 = 1988^2 + 12451^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 158979545 - 2¹⁸ = 158717401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158979547) 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, 19757 + ... + 26613.

It is an arithmetic number, because the mean of its divisors is an integer number (23855553).

Almost surely, 2^158979545 is an apocalyptic number.

It is an amenable number.

158979545 is a deficient number, since it is larger than the sum of its proper divisors (31864879).

158979545 is an equidigital number, since it uses as much as digits as its factorization.

158979545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11499.

The product of its digits is 2268000, while the sum is 53.

The square root of 158979545 is about 12608.7090933212. The cubic root of 158979545 is about 541.7269188466.

The spelling of 158979545 in words is "one hundred fifty-eight million, nine hundred seventy-nine thousand, five hundred forty-five".