55018525920 has 48 divisors (see below), whose sum is σ = 173308358160. Its totient is φ = 14671606784.

The previous prime is 55018525897. The next prime is 55018525931. The reversal of 55018525920 is 2952581055.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57310485 + ... + 57311444.

It is an arithmetic number, because the mean of its divisors is an integer number (3610590795).

Almost surely, 2^55018525920 is an apocalyptic number.

It is an amenable number.

55018525920 is an abundant number, since it is smaller than the sum of its proper divisors (118289832240).

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

55018525920 is a wasteful number, since it uses less digits than its factorization.

55018525920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114621947 (or 114621939 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 42.

The spelling of 55018525920 in words is "fifty-five billion, eighteen million, five hundred twenty-five thousand, nine hundred twenty".