156500001 has 12 divisors (see below), whose sum is σ = 258349312. Its totient is φ = 89428536.

The previous prime is 156499999. The next prime is 156500023. The reversal of 156500001 is 100005651.

156500001 is a `hidden beast` number, since 15 + 650 + 0 + 0 + 0 + 1 = 666.

It is not a de Polignac number, because 156500001 - 2¹ = 156499999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (156500041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1242001 + ... + 1242126.

Almost surely, 2^156500001 is an apocalyptic number.

It is an amenable number.

156500001 is a deficient number, since it is larger than the sum of its proper divisors (101849311).

156500001 is a wasteful number, since it uses less digits than its factorization.

156500001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2484140 (or 2484137 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 156500001 is about 12509.9960431648. The cubic root of 156500001 is about 538.8957785462.

Adding to 156500001 its reverse (100005651), we get a palindrome (256505652).

The spelling of 156500001 in words is "one hundred fifty-six million, five hundred thousand, one".