51055555604 has 6 divisors (see below), whose sum is σ = 89347222314. Its totient is φ = 25527777800.

The previous prime is 51055555601. The next prime is 51055555627. The reversal of 51055555604 is 40655555015.

It is a happy number.

51055555604 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., 29152147600 + 21903408004 = 170740^2 + 147998^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51055555601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6381944447 + ... + 6381944454.

It is an arithmetic number, because the mean of its divisors is an integer number (14891203719).

Almost surely, 2^51055555604 is an apocalyptic number.

It is an amenable number.

51055555604 is a deficient number, since it is larger than the sum of its proper divisors (38291666710).

51055555604 is a wasteful number, since it uses less digits than its factorization.

51055555604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12763888905 (or 12763888903 counting only the distinct ones).

The product of its (nonzero) digits is 375000, while the sum is 41.

The spelling of 51055555604 in words is "fifty-one billion, fifty-five million, five hundred fifty-five thousand, six hundred four".