100256481 has 16 divisors (see below), whose sum is σ = 159953920. Its totient is φ = 61696080.

The previous prime is 100256417. The next prime is 100256501. The reversal of 100256481 is 184652001.

100256481 is a `hidden beast` number, since 10 + 0 + 2 + 5 + 648 + 1 = 666.

It is not a de Polignac number, because 100256481 - 2⁶ = 100256417 is a prime.

It is a super-2 number, since 2×100256481² = 20102723965006722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100256411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142465 + ... + 143166.

It is an arithmetic number, because the mean of its divisors is an integer number (9997120).

Almost surely, 2^100256481 is an apocalyptic number.

It is an amenable number.

100256481 is a deficient number, since it is larger than the sum of its proper divisors (59697439).

100256481 is a wasteful number, since it uses less digits than its factorization.

100256481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285653 (or 285647 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 100256481 is about 10012.8158377152. The cubic root of 100256481 is about 464.5553710309. Note that the first 3 decimals are identical.

The spelling of 100256481 in words is "one hundred million, two hundred fifty-six thousand, four hundred eighty-one".