5057407781 has 2 divisors, whose sum is σ = 5057407782. Its totient is φ = 5057407780.

The previous prime is 5057407777. The next prime is 5057407799. The reversal of 5057407781 is 1877047505.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4820524900 + 236882881 = 69430^2 + 15391^2 .

It is a cyclic number.

It is not a de Polignac number, because 5057407781 - 2² = 5057407777 is a prime.

It is a super-2 number, since 2×5057407781² = 51154746926638687922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5057407721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2528703890 + 2528703891.

It is an arithmetic number, because the mean of its divisors is an integer number (2528703891).

Almost surely, 2^5057407781 is an apocalyptic number.

It is an amenable number.

5057407781 is a deficient number, since it is larger than the sum of its proper divisors (1).

5057407781 is an equidigital number, since it uses as much as digits as its factorization.

5057407781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 274400, while the sum is 44.

The square root of 5057407781 is about 71115.4538831048. The cubic root of 5057407781 is about 1716.4954535920.

The spelling of 5057407781 in words is "five billion, fifty-seven million, four hundred seven thousand, seven hundred eighty-one".