100520447 has 4 divisors (see below), whose sum is σ = 100600320. Its totient is φ = 100440576.

The previous prime is 100520429. The next prime is 100520449. The reversal of 100520447 is 744025001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100520447 - 2²⁰ = 99471871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100520449) 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, 38018 + ... + 40575.

It is an arithmetic number, because the mean of its divisors is an integer number (25150080).

Almost surely, 2^100520447 is an apocalyptic number.

100520447 is a deficient number, since it is larger than the sum of its proper divisors (79873).

100520447 is an equidigital number, since it uses as much as digits as its factorization.

100520447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79872.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 100520447 is about 10025.9885796863. The cubic root of 100520447 is about 464.9627241095.

Adding to 100520447 its reverse (744025001), we get a palindrome (844545448).

The spelling of 100520447 in words is "one hundred million, five hundred twenty thousand, four hundred forty-seven".