5681254637 has 2 divisors, whose sum is σ = 5681254638. Its totient is φ = 5681254636.

The previous prime is 5681254627. The next prime is 5681254661. The reversal of 5681254637 is 7364521865.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5662713001 + 18541636 = 75251^2 + 4306^2 .

It is a cyclic number.

It is not a de Polignac number, because 5681254637 - 2¹² = 5681250541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5681254591 and 5681254600.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5681254627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2840627318 + 2840627319.

It is an arithmetic number, because the mean of its divisors is an integer number (2840627319).

Almost surely, 2^5681254637 is an apocalyptic number.

It is an amenable number.

5681254637 is a deficient number, since it is larger than the sum of its proper divisors (1).

5681254637 is an equidigital number, since it uses as much as digits as its factorization.

5681254637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1209600, while the sum is 47.

The square root of 5681254637 is about 75374.0979183167. The cubic root of 5681254637 is about 1784.3556417479.

The spelling of 5681254637 in words is "five billion, six hundred eighty-one million, two hundred fifty-four thousand, six hundred thirty-seven".