99161500 has 24 divisors (see below), whose sum is σ = 216569808. Its totient is φ = 39664400.

The previous prime is 99161453. The next prime is 99161519. The reversal of 99161500 is 516199.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98662 + ... + 99661.

It is an arithmetic number, because the mean of its divisors is an integer number (9023742).

Almost surely, 2^99161500 is an apocalyptic number.

It is an amenable number.

99161500 is an abundant number, since it is smaller than the sum of its proper divisors (117408308).

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

99161500 is a wasteful number, since it uses less digits than its factorization.

99161500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198342 (or 198330 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 31.

The square root of 99161500 is about 9957.9867443173. The cubic root of 99161500 is about 462.8579162753.

Adding to 99161500 its reverse (516199), we get a palindrome (99677699).

The spelling of 99161500 in words is "ninety-nine million, one hundred sixty-one thousand, five hundred".