5451839 has 4 divisors (see below), whose sum is σ = 5599224. Its totient is φ = 5304456.

The previous prime is 5451833. The next prime is 5451847. The reversal of 5451839 is 9381545.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9381545 = 5 ⋅1876309.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5451839 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 5451799 and 5451808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5451833) 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, 73637 + ... + 73710.

It is an arithmetic number, because the mean of its divisors is an integer number (1399806).

Almost surely, 2^5451839 is an apocalyptic number.

5451839 is a deficient number, since it is larger than the sum of its proper divisors (147385).

5451839 is a wasteful number, since it uses less digits than its factorization.

5451839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147384.

The product of its digits is 21600, while the sum is 35.

The square root of 5451839 is about 2334.9173432908. The cubic root of 5451839 is about 176.0006779416. Note that the first 3 decimals are identical.

The spelling of 5451839 in words is "five million, four hundred fifty-one thousand, eight hundred thirty-nine".