100047001 has 4 divisors (see below), whose sum is σ = 102751012. Its totient is φ = 97342992.

The previous prime is 100046983. The next prime is 100047029. The reversal of 100047001 is 100740001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100740001 = 6571 ⋅15331.

It can be written as a sum of positive squares in 2 ways, for example, as 67568400 + 32478601 = 8220^2 + 5699^2 .

It is a cyclic number.

It is not a de Polignac number, because 100047001 - 2⁷ = 100046873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100042001) 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, 1351950 + ... + 1352023.

It is an arithmetic number, because the mean of its divisors is an integer number (25687753).

Almost surely, 2^100047001 is an apocalyptic number.

It is an amenable number.

100047001 is a deficient number, since it is larger than the sum of its proper divisors (2704011).

100047001 is an equidigital number, since it uses as much as digits as its factorization.

100047001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2704010.

The product of its (nonzero) digits is 28, while the sum is 13.

The square root of 100047001 is about 10002.3497739281. The cubic root of 100047001 is about 464.2315917435.

Adding to 100047001 its reverse (100740001), we get a palindrome (200787002).

The spelling of 100047001 in words is "one hundred million, forty-seven thousand, one".