55278052553028 has 48 divisors (see below), whose sum is σ = 131729817784320. Its totient is φ = 18033509844384.

The previous prime is 55278052552939. The next prime is 55278052553029. The reversal of 55278052553028 is 82035525087255.

It is a super-4 number, since 4×55278052553028⁴ (a number of 56 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is not an unprimeable number, because it can be changed into a prime (55278052553029) 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, 20989125 + ... + 23475507.

It is an arithmetic number, because the mean of its divisors is an integer number (2744371203840).

Almost surely, 2^{55278052553028} is an apocalyptic number.

It is an amenable number.

55278052553028 is an abundant number, since it is smaller than the sum of its proper divisors (76451765231292).

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

55278052553028 is a wasteful number, since it uses less digits than its factorization.

55278052553028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2525856 (or 2525854 counting only the distinct ones).

The product of its (nonzero) digits is 33600000, while the sum is 57.

The spelling of 55278052553028 in words is "fifty-five trillion, two hundred seventy-eight billion, fifty-two million, five hundred fifty-three thousand, twenty-eight".