100227491 has 24 divisors (see below), whose sum is σ = 131037984. Its totient is φ = 75841920.

The previous prime is 100227473. The next prime is 100227521. The reversal of 100227491 is 194722001.

It is not a de Polignac number, because 100227491 - 2²⁶ = 33118627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100227491.

It is not an unprimeable number, because it can be changed into a prime (100227691) 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, 11231 + ... + 18071.

It is an arithmetic number, because the mean of its divisors is an integer number (5459916).

Almost surely, 2^100227491 is an apocalyptic number.

100227491 is a deficient number, since it is larger than the sum of its proper divisors (30810493).

100227491 is a wasteful number, since it uses less digits than its factorization.

100227491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6891 (or 6884 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 100227491 is about 10011.3680883284. The cubic root of 100227491 is about 464.5105900241.

Adding to 100227491 its reverse (194722001), we get a palindrome (294949492).

The spelling of 100227491 in words is "one hundred million, two hundred twenty-seven thousand, four hundred ninety-one".