55447836 has 24 divisors (see below), whose sum is σ = 129507840. Its totient is φ = 18464112.

The previous prime is 55447831. The next prime is 55447837. The reversal of 55447836 is 63874455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55447831) 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 7 ways as a sum of consecutive naturals, for example, 15925 + ... + 19091.

It is an arithmetic number, because the mean of its divisors is an integer number (5396160).

Almost surely, 2^55447836 is an apocalyptic number.

It is an amenable number.

55447836 is an abundant number, since it is smaller than the sum of its proper divisors (74060004).

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

55447836 is a wasteful number, since it uses less digits than its factorization.

55447836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4633 (or 4631 counting only the distinct ones).

The product of its digits is 403200, while the sum is 42.

The square root of 55447836 is about 7446.3303713977. The cubic root of 55447836 is about 381.3246384013.

The spelling of 55447836 in words is "fifty-five million, four hundred forty-seven thousand, eight hundred thirty-six".