156116001 has 4 divisors (see below), whose sum is σ = 208154672. Its totient is φ = 104077332.

The previous prime is 156115997. The next prime is 156116017. The reversal of 156116001 is 100611651.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 156116001 - 2² = 156115997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (156116041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26019331 + ... + 26019336.

It is an arithmetic number, because the mean of its divisors is an integer number (52038668).

Almost surely, 2^156116001 is an apocalyptic number.

It is an amenable number.

156116001 is a deficient number, since it is larger than the sum of its proper divisors (52038671).

156116001 is an equidigital number, since it uses as much as digits as its factorization.

156116001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52038670.

The product of its (nonzero) digits is 180, while the sum is 21.

The square root of 156116001 is about 12494.6388903401. The cubic root of 156116001 is about 538.4546593559.

Adding to 156116001 its reverse (100611651), we get a palindrome (256727652).

It can be divided in two parts, 15611 and 6001, that added together give a palindrome (21612).

The spelling of 156116001 in words is "one hundred fifty-six million, one hundred sixteen thousand, one".