55512404 has 6 divisors (see below), whose sum is σ = 97146714. Its totient is φ = 27756200.

The previous prime is 55512389. The next prime is 55512439. The reversal of 55512404 is 40421555.

55512404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 35976004 + 19536400 = 5998^2 + 4420^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6939047 + ... + 6939054.

It is an arithmetic number, because the mean of its divisors is an integer number (16191119).

Almost surely, 2^55512404 is an apocalyptic number.

It is an amenable number.

55512404 is a deficient number, since it is larger than the sum of its proper divisors (41634310).

55512404 is a wasteful number, since it uses less digits than its factorization.

55512404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13878105 (or 13878103 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 55512404 is about 7450.6646683366. The cubic root of 55512404 is about 381.4725961947.

Adding to 55512404 its reverse (40421555), we get a palindrome (95933959).

The spelling of 55512404 in words is "fifty-five million, five hundred twelve thousand, four hundred four".