100412555 has 8 divisors (see below), whose sum is σ = 122020800. Its totient is φ = 79312896.

The previous prime is 100412551. The next prime is 100412563. The reversal of 100412555 is 555214001.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 100412555 - 2² = 100412551 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100412555.

It is not an unprimeable number, because it can be changed into a prime (100412551) 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, 126710 + ... + 127499.

It is an arithmetic number, because the mean of its divisors is an integer number (15252600).

Almost surely, 2^100412555 is an apocalyptic number.

100412555 is a deficient number, since it is larger than the sum of its proper divisors (21608245).

100412555 is an equidigital number, since it uses as much as digits as its factorization.

100412555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254293.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 100412555 is about 10020.6065185696. The cubic root of 100412555 is about 464.7963111436.

Adding to 100412555 its reverse (555214001), we get a palindrome (655626556).

The spelling of 100412555 in words is "one hundred million, four hundred twelve thousand, five hundred fifty-five".