91504100 has 18 divisors (see below), whose sum is σ = 198564114. Its totient is φ = 36601600.

The previous prime is 91504099. The next prime is 91504109. The reversal of 91504100 is 140519.

It can be written as a sum of positive squares in 3 ways, for example, as 7268416 + 84235684 = 2696^2 + 9178^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (91504109) 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, 457421 + ... + 457620.

Almost surely, 2^91504100 is an apocalyptic number.

It is an amenable number.

91504100 is an abundant number, since it is smaller than the sum of its proper divisors (107060014).

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

91504100 is a wasteful number, since it uses less digits than its factorization.

91504100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 915055 (or 915048 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 91504100 is about 9565.7775428869. Note that the first 3 decimals coincide. The cubic root of 91504100 is about 450.6231695450.

Adding to 91504100 its reverse (140519), we get a palindrome (91644619).

The spelling of 91504100 in words is "ninety-one million, five hundred four thousand, one hundred".