163117550 has 24 divisors (see below), whose sum is σ = 321247296. Its totient is φ = 61408640.

The previous prime is 163117531. The next prime is 163117561. The reversal of 163117550 is 55711361.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 95102 + ... + 96801.

It is an arithmetic number, because the mean of its divisors is an integer number (13385304).

Almost surely, 2^163117550 is an apocalyptic number.

163117550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

163117550 is a deficient number, since it is larger than the sum of its proper divisors (158129746).

163117550 is a wasteful number, since it uses less digits than its factorization.

163117550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191932 (or 191927 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 29.

The square root of 163117550 is about 12771.7481184057. The cubic root of 163117550 is about 546.3868391547.

The spelling of 163117550 in words is "one hundred sixty-three million, one hundred seventeen thousand, five hundred fifty".