10540381 has 2 divisors, whose sum is σ = 10540382. Its totient is φ = 10540380.

The previous prime is 10540379. The next prime is 10540423. The reversal of 10540381 is 18304501.

10540381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5405625 + 5134756 = 2325^2 + 2266^2 .

It is a cyclic number.

It is not a de Polignac number, because 10540381 - 2¹ = 10540379 is a prime.

It is a super-2 number, since 2×10540381² = 222199263250322, which contains 22 as substring.

Together with 10540379, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10540331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5270190 + 5270191.

It is an arithmetic number, because the mean of its divisors is an integer number (5270191).

Almost surely, 2^10540381 is an apocalyptic number.

It is an amenable number.

10540381 is a deficient number, since it is larger than the sum of its proper divisors (1).

10540381 is an equidigital number, since it uses as much as digits as its factorization.

10540381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 10540381 is about 3246.5952935344. The cubic root of 10540381 is about 219.2563111783.

Adding to 10540381 its reverse (18304501), we get a palindrome (28844882).

The spelling of 10540381 in words is "ten million, five hundred forty thousand, three hundred eighty-one".