156564045 has 24 divisors (see below), whose sum is σ = 296049312. Its totient is φ = 75909600.

The previous prime is 156564041. The next prime is 156564061. The reversal of 156564045 is 540465651.

156564045 is a `hidden beast` number, since 1 + 5 + 6 + 5 + 640 + 4 + 5 = 666.

It is not a de Polignac number, because 156564045 - 2² = 156564041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156564041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 157651 + ... + 158640.

It is an arithmetic number, because the mean of its divisors is an integer number (12335388).

Almost surely, 2^156564045 is an apocalyptic number.

156564045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

156564045 is a deficient number, since it is larger than the sum of its proper divisors (139485267).

156564045 is a wasteful number, since it uses less digits than its factorization.

156564045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316313 (or 316310 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

The square root of 156564045 is about 12512.5554943824. Note that the first 3 decimals coincide. The cubic root of 156564045 is about 538.9692787256.

It can be divided in two parts, 15656 and 4045, that added together give a triangular number (19701 = T₁₉₈).

The spelling of 156564045 in words is "one hundred fifty-six million, five hundred sixty-four thousand, forty-five".