487057421 has 4 divisors (see below), whose sum is σ = 487112892. Its totient is φ = 487001952.

The previous prime is 487057397. The next prime is 487057423. The reversal of 487057421 is 124750784.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 391604521 + 95452900 = 19789^2 + 9770^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-487057421 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 (487057423) 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, 11330 + ... + 33203.

It is an arithmetic number, because the mean of its divisors is an integer number (121778223).

Almost surely, 2^487057421 is an apocalyptic number.

It is an amenable number.

487057421 is a deficient number, since it is larger than the sum of its proper divisors (55471).

487057421 is a wasteful number, since it uses less digits than its factorization.

487057421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55470.

The product of its (nonzero) digits is 62720, while the sum is 38.

The square root of 487057421 is about 22069.3774493074. The cubic root of 487057421 is about 786.7922165275.

The spelling of 487057421 in words is "four hundred eighty-seven million, fifty-seven thousand, four hundred twenty-one".