5140781 has 2 divisors, whose sum is σ = 5140782. Its totient is φ = 5140780.

The previous prime is 5140777. The next prime is 5140829. The reversal of 5140781 is 1870415.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2920681 + 2220100 = 1709^2 + 1490^2 .

It is a cyclic number.

It is not a de Polignac number, because 5140781 - 2² = 5140777 is a prime.

It is a super-2 number, since 2×5140781² = 52855258579922, which contains 22 as substring.

It is a Chen prime.

It is equal to p₃₅₇₆₁₄ and since 5140781 and 357614 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5140781.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5140741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2570390 + 2570391.

It is an arithmetic number, because the mean of its divisors is an integer number (2570391).

Almost surely, 2^5140781 is an apocalyptic number.

It is an amenable number.

5140781 is a deficient number, since it is larger than the sum of its proper divisors (1).

5140781 is an equidigital number, since it uses as much as digits as its factorization.

5140781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 5140781 is about 2267.3290453748. The cubic root of 5140781 is about 172.5876443227.

The spelling of 5140781 in words is "five million, one hundred forty thousand, seven hundred eighty-one".