156800101 has 2 divisors, whose sum is σ = 156800102. Its totient is φ = 156800100.

The previous prime is 156800099. The next prime is 156800173. The reversal of 156800101 is 101008651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 154977601 + 1822500 = 12449^2 + 1350^2 .

It is an emirp because it is prime and its reverse (101008651) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 156800101 - 2¹ = 156800099 is a prime.

It is a super-2 number, since 2×156800101² = 49172543347220402, which contains 22 as substring.

Together with 156800099, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (156801101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78400050 + 78400051.

It is an arithmetic number, because the mean of its divisors is an integer number (78400051).

Almost surely, 2^156800101 is an apocalyptic number.

It is an amenable number.

156800101 is a deficient number, since it is larger than the sum of its proper divisors (1).

156800101 is an equidigital number, since it uses as much as digits as its factorization.

156800101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 240, while the sum is 22.

The square root of 156800101 is about 12521.9847069065. The cubic root of 156800101 is about 539.2400157358.

Adding to 156800101 its reverse (101008651), we get a palindrome (257808752).

The spelling of 156800101 in words is "one hundred fifty-six million, eight hundred thousand, one hundred one".