5971381 has 4 divisors (see below), whose sum is σ = 6430732. Its totient is φ = 5512032.

The previous prime is 5971379. The next prime is 5971391. The reversal of 5971381 is 1831795.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1703025 + 4268356 = 1305^2 + 2066^2 .

It is a cyclic number.

It is not a de Polignac number, because 5971381 - 2¹ = 5971379 is a prime.

It is a super-2 number, since 2×5971381² = 71314782094322, 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 (5971321) 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, 229656 + ... + 229681.

It is an arithmetic number, because the mean of its divisors is an integer number (1607683).

Almost surely, 2^5971381 is an apocalyptic number.

It is an amenable number.

5971381 is a deficient number, since it is larger than the sum of its proper divisors (459351).

5971381 is a wasteful number, since it uses less digits than its factorization.

5971381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459350.

The product of its digits is 7560, while the sum is 34.

The square root of 5971381 is about 2443.6409310699. The cubic root of 5971381 is about 181.4226866288.

The spelling of 5971381 in words is "five million, nine hundred seventy-one thousand, three hundred eighty-one".