55228134520 has 64 divisors (see below), whose sum is σ = 139640397120. Its totient is φ = 19505316864.

The previous prime is 55228134509. The next prime is 55228134523. The reversal of 55228134520 is 2543182255.

It is a self number, because there is not a number n which added to its sum of digits gives 55228134520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55228134523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2296909 + ... + 2320828.

It is an arithmetic number, because the mean of its divisors is an integer number (2181881205).

Almost surely, 2^55228134520 is an apocalyptic number.

It is an amenable number.

55228134520 is an abundant number, since it is smaller than the sum of its proper divisors (84412262600).

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

55228134520 is a wasteful number, since it uses less digits than its factorization.

55228134520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4617784 (or 4617780 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 37.

The spelling of 55228134520 in words is "fifty-five billion, two hundred twenty-eight million, one hundred thirty-four thousand, five hundred twenty".