487878551 has 2 divisors, whose sum is σ = 487878552. Its totient is φ = 487878550.

The previous prime is 487878539. The next prime is 487878619. The reversal of 487878551 is 155878784.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-487878551 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 487878493 and 487878502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (487878851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243939275 + 243939276.

It is an arithmetic number, because the mean of its divisors is an integer number (243939276).

Almost surely, 2^487878551 is an apocalyptic number.

487878551 is a deficient number, since it is larger than the sum of its proper divisors (1).

487878551 is an equidigital number, since it uses as much as digits as its factorization.

487878551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2508800, while the sum is 53.

The square root of 487878551 is about 22087.9729943696. The cubic root of 487878551 is about 787.2341192281.

The spelling of 487878551 in words is "four hundred eighty-seven million, eight hundred seventy-eight thousand, five hundred fifty-one".