5413981 has 4 divisors (see below), whose sum is σ = 5600700. Its totient is φ = 5227264.

The previous prime is 5413957. The next prime is 5413987. The reversal of 5413981 is 1893145.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1893145 = 5 ⋅378629.

It can be written as a sum of positive squares in 2 ways, for example, as 2295225 + 3118756 = 1515^2 + 1766^2 .

It is a cyclic number.

It is not a de Polignac number, because 5413981 - 2⁷ = 5413853 is a prime.

It is a super-2 number, since 2×5413981² = 58622380536722, which contains 22 as substring.

It is a Duffinian number.

5413981 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5413987) 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, 93316 + ... + 93373.

It is an arithmetic number, because the mean of its divisors is an integer number (1400175).

Almost surely, 2^5413981 is an apocalyptic number.

It is an amenable number.

5413981 is a deficient number, since it is larger than the sum of its proper divisors (186719).

5413981 is a wasteful number, since it uses less digits than its factorization.

5413981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186718.

The product of its digits is 4320, while the sum is 31.

The square root of 5413981 is about 2326.7962953383. The cubic root of 5413981 is about 175.5923437802.

The spelling of 5413981 in words is "five million, four hundred thirteen thousand, nine hundred eighty-one".