55737839 has 4 divisors (see below), whose sum is σ = 55757856. Its totient is φ = 55717824.

The previous prime is 55737833. The next prime is 55737841. The reversal of 55737839 is 93873755.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93873755 = 5 ⋅18774751.

It is a cyclic number.

It is not a de Polignac number, because 55737839 - 2⁴ = 55737823 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55737793 and 55737802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55737833) 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, 4994 + ... + 11679.

It is an arithmetic number, because the mean of its divisors is an integer number (13939464).

Almost surely, 2^55737839 is an apocalyptic number.

55737839 is a deficient number, since it is larger than the sum of its proper divisors (20017).

55737839 is a wasteful number, since it uses less digits than its factorization.

55737839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20016.

The product of its digits is 793800, while the sum is 47.

The square root of 55737839 is about 7465.7778563255. Note that the first 3 decimals coincide. The cubic root of 55737839 is about 381.9882834962.

The spelling of 55737839 in words is "fifty-five million, seven hundred thirty-seven thousand, eight hundred thirty-nine".