156855049 has 4 divisors (see below), whose sum is σ = 168920836. Its totient is φ = 144789264.

The previous prime is 156855047. The next prime is 156855103. The reversal of 156855049 is 940558651.

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 66129424 + 90725625 = 8132^2 + 9525^2 .

It is a cyclic number.

It is not a de Polignac number, because 156855049 - 2¹ = 156855047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 156854996 and 156855014.

It is not an unprimeable number, because it can be changed into a prime (156855047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6032874 + ... + 6032899.

It is an arithmetic number, because the mean of its divisors is an integer number (42230209).

Almost surely, 2^156855049 is an apocalyptic number.

It is an amenable number.

156855049 is a deficient number, since it is larger than the sum of its proper divisors (12065787).

156855049 is a wasteful number, since it uses less digits than its factorization.

156855049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12065786.

The product of its (nonzero) digits is 216000, while the sum is 43.

The square root of 156855049 is about 12524.1785758588. The cubic root of 156855049 is about 539.3029976254.

The spelling of 156855049 in words is "one hundred fifty-six million, eight hundred fifty-five thousand, forty-nine".