100001641 has 4 divisors (see below), whose sum is σ = 100615312. Its totient is φ = 99387972.

The previous prime is 100001623. The next prime is 100001651. The reversal of 100001641 is 146100001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 100001641 - 2¹³ = 99993449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100001611) 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, 306591 + ... + 306916.

It is an arithmetic number, because the mean of its divisors is an integer number (25153828).

Almost surely, 2^100001641 is an apocalyptic number.

It is an amenable number.

100001641 is a deficient number, since it is larger than the sum of its proper divisors (613671).

100001641 is an equidigital number, since it uses as much as digits as its factorization.

100001641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613670.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 100001641 is about 10000.0820496634. The cubic root of 100001641 is about 464.1614222965.

Adding to 100001641 its reverse (146100001), we get a palindrome (246101642).

The spelling of 100001641 in words is "one hundred million, one thousand, six hundred forty-one".