55439814 has 16 divisors (see below), whose sum is σ = 113458752. Its totient is φ = 18050088.

The previous prime is 55439779. The next prime is 55439819. The reversal of 55439814 is 41893455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55439819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107184 + ... + 107699.

It is an arithmetic number, because the mean of its divisors is an integer number (7091172).

Almost surely, 2^55439814 is an apocalyptic number.

55439814 is an abundant number, since it is smaller than the sum of its proper divisors (58018938).

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

55439814 is a wasteful number, since it uses less digits than its factorization.

55439814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214931.

The product of its digits is 86400, while the sum is 39.

The square root of 55439814 is about 7445.7916973281. The cubic root of 55439814 is about 381.3062479404.

The spelling of 55439814 in words is "fifty-five million, four hundred thirty-nine thousand, eight hundred fourteen".