156823145 has 4 divisors (see below), whose sum is σ = 188187780. Its totient is φ = 125458512.

The previous prime is 156823127. The next prime is 156823157. The reversal of 156823145 is 541328651.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31091776 + 125731369 = 5576^2 + 11213^2 .

It is a cyclic number.

It is not a de Polignac number, because 156823145 - 2¹⁰ = 156822121 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15682310 + ... + 15682319.

It is an arithmetic number, because the mean of its divisors is an integer number (47046945).

Almost surely, 2^156823145 is an apocalyptic number.

It is an amenable number.

156823145 is a deficient number, since it is larger than the sum of its proper divisors (31364635).

156823145 is an equidigital number, since it uses as much as digits as its factorization.

156823145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31364634.

The product of its digits is 28800, while the sum is 35.

The square root of 156823145 is about 12522.9048147784. The cubic root of 156823145 is about 539.2664307661.

The spelling of 156823145 in words is "one hundred fifty-six million, eight hundred twenty-three thousand, one hundred forty-five".