5150577781 has 2 divisors, whose sum is σ = 5150577782. Its totient is φ = 5150577780.

The previous prime is 5150577721. The next prime is 5150577793. The reversal of 5150577781 is 1877750515.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2686348900 + 2464228881 = 51830^2 + 49641^2 .

It is a cyclic number.

It is not a de Polignac number, because 5150577781 - 2¹⁷ = 5150446709 is a prime.

It is a super-2 number, since 2×5150577781² = 53056902956261767922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5150577721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2575288890 + 2575288891.

It is an arithmetic number, because the mean of its divisors is an integer number (2575288891).

Almost surely, 2^5150577781 is an apocalyptic number.

It is an amenable number.

5150577781 is a deficient number, since it is larger than the sum of its proper divisors (1).

5150577781 is an equidigital number, since it uses as much as digits as its factorization.

5150577781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 343000, while the sum is 46.

The square root of 5150577781 is about 71767.5259501120. The cubic root of 5150577781 is about 1726.9720811836.

It can be divided in two parts, 51505 and 77781, that added together give a triangular number (129286 = T₅₀₈).

The spelling of 5150577781 in words is "five billion, one hundred fifty million, five hundred seventy-seven thousand, seven hundred eighty-one".