2487858561 has 12 divisors (see below), whose sum is σ = 3599641188. Its totient is φ = 1655771904.

The previous prime is 2487858553. The next prime is 2487858631. The reversal of 2487858561 is 1658587842.

2487858561 is a `hidden beast` number, since 2 + 4 + 8 + 78 + 5 + 8 + 561 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1039675536 + 1448183025 = 32244^2 + 38055^2 .

It is not a de Polignac number, because 2487858561 - 2³ = 2487858553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2487858498 and 2487858507.

It is not an unprimeable number, because it can be changed into a prime (2487158561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 227740 + ... + 238413.

It is an arithmetic number, because the mean of its divisors is an integer number (299970099).

Almost surely, 2^2487858561 is an apocalyptic number.

It is an amenable number.

2487858561 is a deficient number, since it is larger than the sum of its proper divisors (1111782627).

2487858561 is a wasteful number, since it uses less digits than its factorization.

2487858561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466752 (or 466749 counting only the distinct ones).

The product of its digits is 4300800, while the sum is 54.

The square root of 2487858561 is about 49878.4378364038. The cubic root of 2487858561 is about 1355.0081127676.

The spelling of 2487858561 in words is "two billion, four hundred eighty-seven million, eight hundred fifty-eight thousand, five hundred sixty-one".