487797481 has 4 divisors (see below), whose sum is σ = 490718592. Its totient is φ = 484876372.

The previous prime is 487797467. The next prime is 487797491. The reversal of 487797481 is 184797784.

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 487797481 - 2²³ = 479408873 is a prime.

It is a super-2 number, since 2×487797481² = 475892764939890722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (487797451) 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, 1460305 + ... + 1460638.

It is an arithmetic number, because the mean of its divisors is an integer number (122679648).

Almost surely, 2^487797481 is an apocalyptic number.

487797481 is the 13969-th centered pentagonal number.

It is an amenable number.

487797481 is a deficient number, since it is larger than the sum of its proper divisors (2921111).

487797481 is a wasteful number, since it uses less digits than its factorization.

487797481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2921110.

The product of its digits is 3161088, while the sum is 55.

The square root of 487797481 is about 22086.1377565205. The cubic root of 487797481 is about 787.1905123336.

The spelling of 487797481 in words is "four hundred eighty-seven million, seven hundred ninety-seven thousand, four hundred eighty-one".