156400101 has 24 divisors (see below), whose sum is σ = 265408416. Its totient is φ = 87495840.

The previous prime is 156400063. The next prime is 156400121. The reversal of 156400101 is 101004651.

156400101 is a `hidden beast` number, since 1 + 564 + 0 + 0 + 101 = 666.

It is not a de Polignac number, because 156400101 - 2⁶ = 156400037 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156400121) 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, 59475 + ... + 62048.

It is an arithmetic number, because the mean of its divisors is an integer number (11058684).

Almost surely, 2^156400101 is an apocalyptic number.

156400101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

156400101 is a deficient number, since it is larger than the sum of its proper divisors (109008315).

156400101 is a wasteful number, since it uses less digits than its factorization.

156400101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121553 (or 121550 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 156400101 is about 12506.0025987523. The cubic root of 156400101 is about 538.7810881370.

Adding to 156400101 its reverse (101004651), we get a palindrome (257404752).

The spelling of 156400101 in words is "one hundred fifty-six million, four hundred thousand, one hundred one".