5091381 has 24 divisors (see below), whose sum is σ = 7884864. Its totient is φ = 3154560.

The previous prime is 5091379. The next prime is 5091407. The reversal of 5091381 is 1831905.

It is not a de Polignac number, because 5091381 - 2¹ = 5091379 is a prime.

It is a super-2 number, since 2×5091381² = 51844320974322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5091301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16216 + ... + 16526.

It is an arithmetic number, because the mean of its divisors is an integer number (328536).

Almost surely, 2^5091381 is an apocalyptic number.

5091381 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

5091381 is a deficient number, since it is larger than the sum of its proper divisors (2793483).

5091381 is a wasteful number, since it uses less digits than its factorization.

5091381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 27.

The square root of 5091381 is about 2256.4088725229. The cubic root of 5091381 is about 172.0330407951.

The spelling of 5091381 in words is "five million, ninety-one thousand, three hundred eighty-one".