100555451 has 4 divisors (see below), whose sum is σ = 100600032. Its totient is φ = 100510872.

The previous prime is 100555447. The next prime is 100555453. The reversal of 100555451 is 154555001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 154555001 = 71 ⋅2176831.

It is a cyclic number.

It is not a de Polignac number, because 100555451 - 2² = 100555447 is a prime.

It is a super-2 number, since 2×100555451² = 20222797451626802, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100555451.

It is not an unprimeable number, because it can be changed into a prime (100555453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18716 + ... + 23481.

It is an arithmetic number, because the mean of its divisors is an integer number (25150008).

Almost surely, 2^100555451 is an apocalyptic number.

100555451 is a deficient number, since it is larger than the sum of its proper divisors (44581).

100555451 is an equidigital number, since it uses as much as digits as its factorization.

100555451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44580.

The product of its (nonzero) digits is 2500, while the sum is 26.

The square root of 100555451 is about 10027.7340910098. The cubic root of 100555451 is about 465.0166888064.

The spelling of 100555451 in words is "one hundred million, five hundred fifty-five thousand, four hundred fifty-one".