55667839 has 4 divisors (see below), whose sum is σ = 55911160. Its totient is φ = 55424520.

The previous prime is 55667837. The next prime is 55667897. The reversal of 55667839 is 93876655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93876655 = 5 ⋅18775331.

It is a cyclic number.

It is not a de Polignac number, because 55667839 - 2¹ = 55667837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55667792 and 55667801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55667837) 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, 121317 + ... + 121774.

It is an arithmetic number, because the mean of its divisors is an integer number (13977790).

Almost surely, 2^55667839 is an apocalyptic number.

55667839 is a deficient number, since it is larger than the sum of its proper divisors (243321).

55667839 is a wasteful number, since it uses less digits than its factorization.

55667839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243320.

The product of its digits is 1360800, while the sum is 49.

The square root of 55667839 is about 7461.0883254389. The cubic root of 55667839 is about 381.8283061100.

The spelling of 55667839 in words is "fifty-five million, six hundred sixty-seven thousand, eight hundred thirty-nine".