5101381 has 2 divisors, whose sum is σ = 5101382. Its totient is φ = 5101380.

The previous prime is 5101379. The next prime is 5101387. The reversal of 5101381 is 1831015.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3045025 + 2056356 = 1745^2 + 1434^2 .

It is a cyclic number.

It is not a de Polignac number, because 5101381 - 2¹ = 5101379 is a prime.

It is a super-2 number, since 2×5101381² = 52048176214322, which contains 22 as substring.

Together with 5101379, 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 (5101387) 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 as a sum of consecutive naturals, namely, 2550690 + 2550691.

It is an arithmetic number, because the mean of its divisors is an integer number (2550691).

Almost surely, 2^5101381 is an apocalyptic number.

It is an amenable number.

5101381 is a deficient number, since it is larger than the sum of its proper divisors (1).

5101381 is an equidigital number, since it uses as much as digits as its factorization.

5101381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 5101381 is about 2258.6236959706. The cubic root of 5101381 is about 172.1455973774.

Adding to 5101381 its reverse (1831015), we get a palindrome (6932396).

It can be divided in two parts, 510 and 1381, that added together give a triangular number (1891 = T₆₁).

The spelling of 5101381 in words is "five million, one hundred one thousand, three hundred eighty-one".