100521641 has 8 divisors (see below), whose sum is σ = 111297504. Its totient is φ = 90018720.

The previous prime is 100521583. The next prime is 100521649. The reversal of 100521641 is 146125001.

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

It is not a de Polignac number, because 100521641 - 2²⁶ = 33412777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100521649) 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, 67460 + ... + 68933.

It is an arithmetic number, because the mean of its divisors is an integer number (13912188).

Almost surely, 2^100521641 is an apocalyptic number.

100521641 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100521641 is a deficient number, since it is larger than the sum of its proper divisors (10775863).

100521641 is a wasteful number, since it uses less digits than its factorization.

100521641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136471.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 100521641 is about 10026.0481247598. The cubic root of 100521641 is about 464.9645650725.

Adding to 100521641 its reverse (146125001), we get a palindrome (246646642).

The spelling of 100521641 in words is "one hundred million, five hundred twenty-one thousand, six hundred forty-one".