5921381 has 4 divisors (see below), whose sum is σ = 5926272. Its totient is φ = 5916492.

The previous prime is 5921371. The next prime is 5921411. The reversal of 5921381 is 1831295.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1831295 = 5 ⋅366259.

It is a cyclic number.

It is not a de Polignac number, because 5921381 - 2⁶ = 5921317 is a prime.

It is a super-2 number, since 2×5921381² = 70125505894322, 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 (5921351) 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, 866 + ... + 3548.

It is an arithmetic number, because the mean of its divisors is an integer number (1481568).

Almost surely, 2^5921381 is an apocalyptic number.

It is an amenable number.

5921381 is a deficient number, since it is larger than the sum of its proper divisors (4891).

5921381 is a wasteful number, since it uses less digits than its factorization.

5921381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4890.

The product of its digits is 2160, while the sum is 29.

The square root of 5921381 is about 2433.3887893224. The cubic root of 5921381 is about 180.9148995061.

The spelling of 5921381 in words is "five million, nine hundred twenty-one thousand, three hundred eighty-one".