5133981 has 4 divisors (see below), whose sum is σ = 6845312. Its totient is φ = 3422652.

The previous prime is 5133977. The next prime is 5134013. The reversal of 5133981 is 1893315.

It is a happy number.

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 not a de Polignac number, because 5133981 - 2² = 5133977 is a prime.

It is a super-2 number, since 2×5133981² = 52715521816722, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5133911) 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 in 3 ways as a sum of consecutive naturals, for example, 855661 + ... + 855666.

It is an arithmetic number, because the mean of its divisors is an integer number (1711328).

Almost surely, 2^5133981 is an apocalyptic number.

It is an amenable number.

5133981 is a deficient number, since it is larger than the sum of its proper divisors (1711331).

5133981 is a wasteful number, since it uses less digits than its factorization.

5133981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1711330.

The product of its digits is 3240, while the sum is 30.

The square root of 5133981 is about 2265.8289873686. The cubic root of 5133981 is about 172.5115136192.

The spelling of 5133981 in words is "five million, one hundred thirty-three thousand, nine hundred eighty-one".