487553681 has 4 divisors (see below), whose sum is σ = 488445552. Its totient is φ = 486661812.

The previous prime is 487553669. The next prime is 487553683. The reversal of 487553681 is 186355784.

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 a cyclic number.

It is not a de Polignac number, because 487553681 - 2²² = 483359377 is a prime.

It is a super-2 number, since 2×487553681² = 475417183713299522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (487553683) 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, 445115 + ... + 446208.

It is an arithmetic number, because the mean of its divisors is an integer number (122111388).

Almost surely, 2^487553681 is an apocalyptic number.

It is an amenable number.

487553681 is a deficient number, since it is larger than the sum of its proper divisors (891871).

487553681 is an equidigital number, since it uses as much as digits as its factorization.

487553681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 891870.

The product of its digits is 806400, while the sum is 47.

The square root of 487553681 is about 22080.6177676260. The cubic root of 487553681 is about 787.0593451748.

The spelling of 487553681 in words is "four hundred eighty-seven million, five hundred fifty-three thousand, six hundred eighty-one".