55346388 has 12 divisors (see below), whose sum is σ = 129141600. Its totient is φ = 18448792.

The previous prime is 55346387. The next prime is 55346399. The reversal of 55346388 is 88364355.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55346381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2306088 + ... + 2306111.

It is an arithmetic number, because the mean of its divisors is an integer number (10761800).

Almost surely, 2^55346388 is an apocalyptic number.

It is an amenable number.

55346388 is an abundant number, since it is smaller than the sum of its proper divisors (73795212).

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

55346388 is a wasteful number, since it uses less digits than its factorization.

55346388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4612206 (or 4612204 counting only the distinct ones).

The product of its digits is 345600, while the sum is 42.

The square root of 55346388 is about 7439.5153067925. The cubic root of 55346388 is about 381.0919377747.

The spelling of 55346388 in words is "fifty-five million, three hundred forty-six thousand, three hundred eighty-eight".