2487517481 has 2 divisors, whose sum is σ = 2487517482. Its totient is φ = 2487517480.

The previous prime is 2487517463. The next prime is 2487517507. The reversal of 2487517481 is 1847157842.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2397571225 + 89946256 = 48965^2 + 9484^2 .

It is a cyclic number.

It is not a de Polignac number, because 2487517481 - 2¹⁴ = 2487501097 is a prime.

It is a super-2 number, since 2×2487517481² = 12375486436561170722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2487517421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1243758740 + 1243758741.

It is an arithmetic number, because the mean of its divisors is an integer number (1243758741).

Almost surely, 2^2487517481 is an apocalyptic number.

It is an amenable number.

2487517481 is a deficient number, since it is larger than the sum of its proper divisors (1).

2487517481 is an equidigital number, since it uses as much as digits as its factorization.

2487517481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 501760, while the sum is 47.

The square root of 2487517481 is about 49875.0186065128. The cubic root of 2487517481 is about 1354.9461870488.

The spelling of 2487517481 in words is "two billion, four hundred eighty-seven million, five hundred seventeen thousand, four hundred eighty-one".