156980101 has 4 divisors (see below), whose sum is σ = 157046400. Its totient is φ = 156913804.

The previous prime is 156980099. The next prime is 156980107. The reversal of 156980101 is 101089651.

156980101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 101089651 = 13 ⋅7776127.

It is a cyclic number.

It is not a de Polignac number, because 156980101 - 2¹ = 156980099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156980107) 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, 29461 + ... + 34378.

It is an arithmetic number, because the mean of its divisors is an integer number (39261600).

Almost surely, 2^156980101 is an apocalyptic number.

It is an amenable number.

156980101 is a deficient number, since it is larger than the sum of its proper divisors (66299).

156980101 is an equidigital number, since it uses as much as digits as its factorization.

156980101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66298.

The product of its (nonzero) digits is 2160, while the sum is 31.

The square root of 156980101 is about 12529.1700044337. The cubic root of 156980101 is about 539.4462785387.

The spelling of 156980101 in words is "one hundred fifty-six million, nine hundred eighty thousand, one hundred one".