5365781 has 4 divisors (see below), whose sum is σ = 5379564. Its totient is φ = 5352000.

The previous prime is 5365769. The next prime is 5365799. The reversal of 5365781 is 1875635.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1875635 = 5 ⋅375127.

It can be written as a sum of positive squares in 2 ways, for example, as 3363556 + 2002225 = 1834^2 + 1415^2 .

It is a cyclic number.

It is not a de Polignac number, because 5365781 - 2²² = 1171477 is a prime.

It is a super-2 number, since 2×5365781² = 57583211479922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5365741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6290 + ... + 7091.

It is an arithmetic number, because the mean of its divisors is an integer number (1344891).

Almost surely, 2^5365781 is an apocalyptic number.

It is an amenable number.

5365781 is a deficient number, since it is larger than the sum of its proper divisors (13783).

5365781 is a wasteful number, since it uses less digits than its factorization.

5365781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13782.

The product of its digits is 25200, while the sum is 35.

The square root of 5365781 is about 2316.4155499392. The cubic root of 5365781 is about 175.0696974079.

The spelling of 5365781 in words is "five million, three hundred sixty-five thousand, seven hundred eighty-one".