156530545 has 12 divisors (see below), whose sum is σ = 194500980. Its totient is φ = 120789984.

The previous prime is 156530537. The next prime is 156530551. The reversal of 156530545 is 545035651.

It can be written as a sum of positive squares in 2 ways, for example, as 69089344 + 87441201 = 8312^2 + 9351^2 .

It is not a de Polignac number, because 156530545 - 2³ = 156530537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 156530545.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150136 + ... + 151174.

It is an arithmetic number, because the mean of its divisors is an integer number (16208415).

Almost surely, 2^156530545 is an apocalyptic number.

It is an amenable number.

156530545 is a deficient number, since it is larger than the sum of its proper divisors (37970435).

156530545 is an frugal number, since it uses more digits than its factorization.

156530545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2112 (or 1073 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 34.

The square root of 156530545 is about 12511.2167673652. The cubic root of 156530545 is about 538.9308349080.

The spelling of 156530545 in words is "one hundred fifty-six million, five hundred thirty thousand, five hundred forty-five".