55685838 has 24 divisors (see below), whose sum is σ = 120599928. Its totient is φ = 17133792.

The previous prime is 55685837. The next prime is 55685843. The reversal of 55685838 is 83858655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55685837) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26445 + ... + 28472.

It is an arithmetic number, because the mean of its divisors is an integer number (5024997).

Almost surely, 2^55685838 is an apocalyptic number.

55685838 is an abundant number, since it is smaller than the sum of its proper divisors (64914090).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55685838 is a wasteful number, since it uses less digits than its factorization.

55685838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54948 (or 54935 counting only the distinct ones).

The product of its digits is 1152000, while the sum is 48.

The square root of 55685838 is about 7462.2944192788. The cubic root of 55685838 is about 381.8694536693.

The spelling of 55685838 in words is "fifty-five million, six hundred eighty-five thousand, eight hundred thirty-eight".