100481569 has 4 divisors (see below), whose sum is σ = 100590660. Its totient is φ = 100372480.

The previous prime is 100481561. The next prime is 100481573. The reversal of 100481569 is 965184001.

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

It can be written as a sum of positive squares in 2 ways, for example, as 32913169 + 67568400 = 5737^2 + 8220^2 .

It is a cyclic number.

It is not a de Polignac number, because 100481569 - 2³ = 100481561 is a prime.

It is a super-2 number, since 2×100481569² = 20193091417403522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100481561) 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, 53152 + ... + 55009.

It is an arithmetic number, because the mean of its divisors is an integer number (25147665).

Almost surely, 2^100481569 is an apocalyptic number.

It is an amenable number.

100481569 is a deficient number, since it is larger than the sum of its proper divisors (109091).

100481569 is an equidigital number, since it uses as much as digits as its factorization.

100481569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109090.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 100481569 is about 10024.0495310029. The cubic root of 100481569 is about 464.9027722876.

The spelling of 100481569 in words is "one hundred million, four hundred eighty-one thousand, five hundred sixty-nine".