10516381 has 4 divisors (see below), whose sum is σ = 10760992. Its totient is φ = 10271772.

The previous prime is 10516379. The next prime is 10516397. The reversal of 10516381 is 18361501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10516381 - 2¹ = 10516379 is a prime.

It is a super-2 number, since 2×10516381² = 221188538674322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10516301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122241 + ... + 122326.

It is an arithmetic number, because the mean of its divisors is an integer number (2690248).

Almost surely, 2^10516381 is an apocalyptic number.

It is an amenable number.

10516381 is a deficient number, since it is larger than the sum of its proper divisors (244611).

10516381 is an equidigital number, since it uses as much as digits as its factorization.

10516381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244610.

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 10516381 is about 3242.8970073069. The cubic root of 10516381 is about 219.0897722766.

Adding to 10516381 its reverse (18361501), we get a palindrome (28877882).

The spelling of 10516381 in words is "ten million, five hundred sixteen thousand, three hundred eighty-one".