100100056 has 32 divisors (see below), whose sum is σ = 225792000. Its totient is φ = 40641696.

The previous prime is 100100053. The next prime is 100100057. The reversal of 100100056 is 650001001.

It is a super-2 number, since 2×100100056² = 20040042422406272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100100051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45976 + ... + 48103.

It is an arithmetic number, because the mean of its divisors is an integer number (7056000).

Almost surely, 2^100100056 is an apocalyptic number.

It is an amenable number.

100100056 is an abundant number, since it is smaller than the sum of its proper divisors (125691944).

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

100100056 is a wasteful number, since it uses less digits than its factorization.

100100056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94111 (or 94107 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 100100056 is about 10005.0015492253. The cubic root of 100100056 is about 464.3136380297.

Adding to 100100056 its reverse (650001001), we get a palindrome (750101057).

The spelling of 100100056 in words is "one hundred million, one hundred thousand, fifty-six".