55612105520 has 40 divisors (see below), whose sum is σ = 129334430400. Its totient is φ = 22238599680.

The previous prime is 55612105517. The next prime is 55612105547. The reversal of 55612105520 is 2550121655.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×55612105520² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194756 + ... + 386204.

It is an arithmetic number, because the mean of its divisors is an integer number (3233360760).

Almost surely, 2^55612105520 is an apocalyptic number.

It is an amenable number.

55612105520 is an abundant number, since it is smaller than the sum of its proper divisors (73722324880).

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

55612105520 is a wasteful number, since it uses less digits than its factorization.

55612105520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195093 (or 195087 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 32.

The spelling of 55612105520 in words is "fifty-five billion, six hundred twelve million, one hundred five thousand, five hundred twenty".