161345200 has 30 divisors (see below), whose sum is σ = 387632804. Its totient is φ = 64537920.

The previous prime is 161345137. The next prime is 161345203. The reversal of 161345200 is 2543161.

It is not an unprimeable number, because it can be changed into a prime (161345203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 201282 + ... + 202081.

Almost surely, 2^161345200 is an apocalyptic number.

161345200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161345200 is an abundant number, since it is smaller than the sum of its proper divisors (226287604).

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

161345200 is a wasteful number, since it uses less digits than its factorization.

161345200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403381 (or 403370 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 161345200 is about 12702.1730424365. The cubic root of 161345200 is about 544.4007103871.

Adding to 161345200 its reverse (2543161), we get a palindrome (163888361).

The spelling of 161345200 in words is "one hundred sixty-one million, three hundred forty-five thousand, two hundred".