55477388 has 6 divisors (see below), whose sum is σ = 97085436. Its totient is φ = 27738692.

The previous prime is 55477361. The next prime is 55477391. The reversal of 55477388 is 88377455.

It is a happy number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 6934670 + ... + 6934677.

It is an arithmetic number, because the mean of its divisors is an integer number (16180906).

Almost surely, 2^55477388 is an apocalyptic number.

It is an amenable number.

55477388 is a deficient number, since it is larger than the sum of its proper divisors (41608048).

55477388 is a wasteful number, since it uses less digits than its factorization.

55477388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13869351 (or 13869349 counting only the distinct ones).

The product of its digits is 940800, while the sum is 47.

The square root of 55477388 is about 7448.3144401938. The cubic root of 55477388 is about 381.3923711577.

The spelling of 55477388 in words is "fifty-five million, four hundred seventy-seven thousand, three hundred eighty-eight".