481876581 has 4 divisors (see below), whose sum is σ = 642502112. Its totient is φ = 321251052.

The previous prime is 481876573. The next prime is 481876597. The reversal of 481876581 is 185678184.

It is a happy number.

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 not a de Polignac number, because 481876581 - 2³ = 481876573 is a prime.

It is a super-2 number, since 2×481876581² = 464410078632499122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 481876581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (481876501) 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, 80312761 + ... + 80312766.

It is an arithmetic number, because the mean of its divisors is an integer number (160625528).

Almost surely, 2^481876581 is an apocalyptic number.

It is an amenable number.

481876581 is a deficient number, since it is larger than the sum of its proper divisors (160625531).

481876581 is a wasteful number, since it uses less digits than its factorization.

481876581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160625530.

The product of its digits is 430080, while the sum is 48.

The square root of 481876581 is about 21951.6874294438. The cubic root of 481876581 is about 783.9925578262.

The spelling of 481876581 in words is "four hundred eighty-one million, eight hundred seventy-six thousand, five hundred eighty-one".