55330510400 has 168 divisors, whose sum is σ = 152540671296. Its totient is φ = 19576166400.

The previous prime is 55330510397. The next prime is 55330510427. The reversal of 55330510400 is 401503355.

It is a super-2 number, since 2×55330510400² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55330510400.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 608717 + ... + 693683.

Almost surely, 2^55330510400 is an apocalyptic number.

55330510400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55330510400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76270335648).

55330510400 is an abundant number, since it is smaller than the sum of its proper divisors (97210160896).

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

55330510400 is a wasteful number, since it uses less digits than its factorization.

55330510400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85037 (or 85022 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 26.

The spelling of 55330510400 in words is "fifty-five billion, three hundred thirty million, five hundred ten thousand, four hundred".