100045871 has 4 divisors (see below), whose sum is σ = 100251792. Its totient is φ = 99839952.

The previous prime is 100045831. The next prime is 100045873. The reversal of 100045871 is 178540001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 178540001 = 17 ⋅10502353.

It is a cyclic number.

It is not a de Polignac number, because 100045871 - 2¹⁴ = 100029487 is a prime.

It is a super-3 number, since 3×100045871³ (a number of 25 digits) contains 333 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 100045871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100045873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102230 + ... + 103203.

It is an arithmetic number, because the mean of its divisors is an integer number (25062948).

Almost surely, 2^100045871 is an apocalyptic number.

100045871 is a deficient number, since it is larger than the sum of its proper divisors (205921).

100045871 is an equidigital number, since it uses as much as digits as its factorization.

100045871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205920.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 100045871 is about 10002.2932870417. The cubic root of 100045871 is about 464.2298439527.

Adding to 100045871 its reverse (178540001), we get a palindrome (278585872).

The spelling of 100045871 in words is "one hundred million, forty-five thousand, eight hundred seventy-one".