55843028280 has 576 divisors, whose sum is σ = 205175617920. Its totient is φ = 13154918400.

The previous prime is 55843028257. The next prime is 55843028291. The reversal of 55843028280 is 8282034855.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 152160657 + ... + 152161023.

It is an arithmetic number, because the mean of its divisors is an integer number (356207670).

Almost surely, 2^55843028280 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55843028280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102587808960).

55843028280 is an abundant number, since it is smaller than the sum of its proper divisors (149332589640).

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

55843028280 is a wasteful number, since it uses less digits than its factorization.

55843028280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512 (or 492 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 45.

The spelling of 55843028280 in words is "fifty-five billion, eight hundred forty-three million, twenty-eight thousand, two hundred eighty".