5851381 has 4 divisors (see below), whose sum is σ = 5867200. Its totient is φ = 5835564.

The previous prime is 5851369. The next prime is 5851387. The reversal of 5851381 is 1831585.

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 5851381 - 2¹⁵ = 5818613 is a prime.

It is a super-2 number, since 2×5851381² = 68477319214322, which contains 22 as substring.

It is a Duffinian number.

5851381 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5851387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7341 + ... + 8098.

It is an arithmetic number, because the mean of its divisors is an integer number (1466800).

Almost surely, 2^5851381 is an apocalyptic number.

It is an amenable number.

5851381 is a deficient number, since it is larger than the sum of its proper divisors (15819).

5851381 is a wasteful number, since it uses less digits than its factorization.

5851381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15818.

The product of its digits is 4800, while the sum is 31.

The square root of 5851381 is about 2418.9627942571. The cubic root of 5851381 is about 180.1991725356.

The spelling of 5851381 in words is "five million, eight hundred fifty-one thousand, three hundred eighty-one".