156261105 has 96 divisors (see below), whose sum is σ = 363767040. Its totient is φ = 59927040.

The previous prime is 156261067. The next prime is 156261107. The reversal of 156261105 is 501162651.

It is a happy number.

It is not a de Polignac number, because 156261105 - 2⁷ = 156260977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (156261107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 43311 + ... + 46779.

It is an arithmetic number, because the mean of its divisors is an integer number (3789240).

Almost surely, 2^156261105 is an apocalyptic number.

156261105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

156261105 is an abundant number, since it is smaller than the sum of its proper divisors (207505935).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

156261105 is a wasteful number, since it uses less digits than its factorization.

156261105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3511 (or 3508 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 156261105 is about 12500.4441921077. Note that the first 3 decimals coincide. The cubic root of 156261105 is about 538.6214322042.

The spelling of 156261105 in words is "one hundred fifty-six million, two hundred sixty-one thousand, one hundred five".