487693521 has 40 divisors (see below), whose sum is σ = 842988960. Its totient is φ = 278644968.

The previous prime is 487693513. The next prime is 487693523. The reversal of 487693521 is 125396784.

It is not a de Polignac number, because 487693521 - 2³ = 487693513 is a prime.

Its product of digits (362880) is a multiple of the sum of its prime factors (7560).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (487693523) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 61066 + ... + 68588.

It is an arithmetic number, because the mean of its divisors is an integer number (21074724).

Almost surely, 2^487693521 is an apocalyptic number.

It is an amenable number.

487693521 is a deficient number, since it is larger than the sum of its proper divisors (355295439).

487693521 is an frugal number, since it uses more digits than its factorization.

487693521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7560 (or 7533 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 487693521 is about 22083.7841186695. The cubic root of 487693521 is about 787.1345860232.

The spelling of 487693521 in words is "four hundred eighty-seven million, six hundred ninety-three thousand, five hundred twenty-one".