55586821400 has 48 divisors (see below), whose sum is σ = 140988398040. Its totient is φ = 20213388800.

The previous prime is 55586821343. The next prime is 55586821441. The reversal of 55586821400 is 412868555.

55586821400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12631169 + ... + 12635568.

Almost surely, 2^55586821400 is an apocalyptic number.

55586821400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55586821400 is an abundant number, since it is smaller than the sum of its proper divisors (85401576640).

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

55586821400 is a wasteful number, since it uses less digits than its factorization.

55586821400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25266764 (or 25266755 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 44.

The spelling of 55586821400 in words is "fifty-five billion, five hundred eighty-six million, eight hundred twenty-one thousand, four hundred".