487381 has 2 divisors, whose sum is σ = 487382. Its totient is φ = 487380.

The previous prime is 487363. The next prime is 487387. The reversal of 487381 is 183784.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 483025 + 4356 = 695^2 + 66^2 .

It is a cyclic number.

It is not a de Polignac number, because 487381 - 2⁵ = 487349 is a prime.

It is a super-2 number, since 2×487381² = 475080478322, which contains 22 as substring.

It is a nialpdrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (487387) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243690 + 243691.

It is an arithmetic number, because the mean of its divisors is an integer number (243691).

2⁴⁸⁷³⁸¹ is an apocalyptic number.

It is an amenable number.

487381 is a deficient number, since it is larger than the sum of its proper divisors (1).

487381 is an equidigital number, since it uses as much as digits as its factorization.

487381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5376, while the sum is 31.

The square root of 487381 is about 698.1267793173. The cubic root of 487381 is about 78.6966414387.

It can be divided in two parts, 487 and 381, that added together give a palindrome (868).

The spelling of 487381 in words is "four hundred eighty-seven thousand, three hundred eighty-one".