5193781 has 2 divisors, whose sum is σ = 5193782. Its totient is φ = 5193780.

The previous prime is 5193767. The next prime is 5193817. The reversal of 5193781 is 1873915.

It is a happy number.

Together with next prime (5193817) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3591025 + 1602756 = 1895^2 + 1266^2 .

It is a cyclic number.

It is not a de Polignac number, because 5193781 - 2¹³ = 5185589 is a prime.

It is a super-2 number, since 2×5193781² = 53950722151922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5193751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2596890 + 2596891.

It is an arithmetic number, because the mean of its divisors is an integer number (2596891).

Almost surely, 2^5193781 is an apocalyptic number.

It is an amenable number.

5193781 is a deficient number, since it is larger than the sum of its proper divisors (1).

5193781 is an equidigital number, since it uses as much as digits as its factorization.

5193781 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 34.

The square root of 5193781 is about 2278.9868362937. The cubic root of 5193781 is about 173.1787276063.

The spelling of 5193781 in words is "five million, one hundred ninety-three thousand, seven hundred eighty-one".