163557105 has 32 divisors (see below), whose sum is σ = 265440000. Its totient is φ = 85992192.

The previous prime is 163557059. The next prime is 163557127. The reversal of 163557105 is 501755361.

It is not a de Polignac number, because 163557105 - 2⁷ = 163556977 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 468471 + ... + 468819.

It is an arithmetic number, because the mean of its divisors is an integer number (8295000).

Almost surely, 2^163557105 is an apocalyptic number.

163557105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163557105 is a deficient number, since it is larger than the sum of its proper divisors (101882895).

163557105 is a wasteful number, since it uses less digits than its factorization.

163557105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713.

The product of its (nonzero) digits is 15750, while the sum is 33.

The square root of 163557105 is about 12788.9446398051. The cubic root of 163557105 is about 546.8771842307.

The spelling of 163557105 in words is "one hundred sixty-three million, five hundred fifty-seven thousand, one hundred five".