99570100 has 72 divisors (see below), whose sum is σ = 249511808. Its totient is φ = 33782400.

The previous prime is 99570077. The next prime is 99570101. The reversal of 99570100 is 107599.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99570101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71410 + ... + 72790.

Almost surely, 2^99570100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99570100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124755904).

99570100 is an abundant number, since it is smaller than the sum of its proper divisors (149941708).

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

99570100 is a wasteful number, since it uses less digits than its factorization.

99570100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1505 (or 1498 counting only the distinct ones).

The product of its (nonzero) digits is 2835, while the sum is 31.

The square root of 99570100 is about 9978.4818484577. The cubic root of 99570100 is about 463.4927882533.

Adding to 99570100 its reverse (107599), we get a palindrome (99677699).

The spelling of 99570100 in words is "ninety-nine million, five hundred seventy thousand, one hundred".