487513121 has 4 divisors (see below), whose sum is σ = 488894532. Its totient is φ = 486131712.

The previous prime is 487513109. The next prime is 487513157. The reversal of 487513121 is 121315784.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 169390225 + 318122896 = 13015^2 + 17836^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-487513121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (487513021) 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, 690176 + ... + 690881.

It is an arithmetic number, because the mean of its divisors is an integer number (122223633).

Almost surely, 2^487513121 is an apocalyptic number.

It is an amenable number.

487513121 is a deficient number, since it is larger than the sum of its proper divisors (1381411).

487513121 is a wasteful number, since it uses less digits than its factorization.

487513121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381410.

The product of its digits is 6720, while the sum is 32.

The square root of 487513121 is about 22079.6992959596. The cubic root of 487513121 is about 787.0375191937.

The spelling of 487513121 in words is "four hundred eighty-seven million, five hundred thirteen thousand, one hundred twenty-one".