5209381 has 2 divisors, whose sum is σ = 5209382. Its totient is φ = 5209380.

The previous prime is 5209319. The next prime is 5209387. The reversal of 5209381 is 1839025.

5209381 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3132900 + 2076481 = 1770^2 + 1441^2 .

It is a cyclic number.

It is not a de Polignac number, because 5209381 - 2¹⁷ = 5078309 is a prime.

It is a super-2 number, since 2×5209381² = 54275300806322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5209387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2604690 + 2604691.

It is an arithmetic number, because the mean of its divisors is an integer number (2604691).

Almost surely, 2^5209381 is an apocalyptic number.

It is an amenable number.

5209381 is a deficient number, since it is larger than the sum of its proper divisors (1).

5209381 is an equidigital number, since it uses as much as digits as its factorization.

5209381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 5209381 is about 2282.4068436631. The cubic root of 5209381 is about 173.3519403924.

The spelling of 5209381 in words is "five million, two hundred nine thousand, three hundred eighty-one".