481144921 has 4 divisors (see below), whose sum is σ = 481424292. Its totient is φ = 480865552.

The previous prime is 481144913. The next prime is 481144943. The reversal of 481144921 is 129441184.

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 378730521 + 102414400 = 19461^2 + 10120^2 .

It is a cyclic number.

It is not a de Polignac number, because 481144921 - 2³ = 481144913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (481144901) 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, 137086 + ... + 140551.

It is an arithmetic number, because the mean of its divisors is an integer number (120356073).

Almost surely, 2^481144921 is an apocalyptic number.

It is an amenable number.

481144921 is a deficient number, since it is larger than the sum of its proper divisors (279371).

481144921 is a wasteful number, since it uses less digits than its factorization.

481144921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279370.

The product of its digits is 9216, while the sum is 34.

The square root of 481144921 is about 21935.0158650501. The cubic root of 481144921 is about 783.5955636716.

It can be divided in two parts, 48114 and 4921, that added together give a palindrome (53035).

The spelling of 481144921 in words is "four hundred eighty-one million, one hundred forty-four thousand, nine hundred twenty-one".