161775350 has 48 divisors (see below), whose sum is σ = 329978880. Its totient is φ = 58519200.

The previous prime is 161775343. The next prime is 161775401. The reversal of 161775350 is 53577161.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 161775350.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121991 + ... + 123309.

It is an arithmetic number, because the mean of its divisors is an integer number (6874560).

Almost surely, 2^161775350 is an apocalyptic number.

161775350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161775350 is an abundant number, since it is smaller than the sum of its proper divisors (168203530).

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

161775350 is a wasteful number, since it uses less digits than its factorization.

161775350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1565 (or 1560 counting only the distinct ones).

The product of its (nonzero) digits is 22050, while the sum is 35.

The square root of 161775350 is about 12719.0939142692. The cubic root of 161775350 is about 544.8840760091.

It can be divided in two parts, 1617 and 75350, that added together give a palindrome (76967).

The spelling of 161775350 in words is "one hundred sixty-one million, seven hundred seventy-five thousand, three hundred fifty".