481428257 has 4 divisors (see below), whose sum is σ = 485845140. Its totient is φ = 477011376.

The previous prime is 481428229. The next prime is 481428313. The reversal of 481428257 is 752824184.

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 358307041 + 123121216 = 18929^2 + 11096^2 .

It is a cyclic number.

It is not a de Polignac number, because 481428257 - 2⁶ = 481428193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (481448257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2208278 + ... + 2208495.

It is an arithmetic number, because the mean of its divisors is an integer number (121461285).

Almost surely, 2^481428257 is an apocalyptic number.

It is an amenable number.

481428257 is a deficient number, since it is larger than the sum of its proper divisors (4416883).

481428257 is a wasteful number, since it uses less digits than its factorization.

481428257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4416882.

The product of its digits is 143360, while the sum is 41.

The square root of 481428257 is about 21941.4734464210. The cubic root of 481428257 is about 783.7493477369.

The spelling of 481428257 in words is "four hundred eighty-one million, four hundred twenty-eight thousand, two hundred fifty-seven".