55100050400 has 36 divisors (see below), whose sum is σ = 134512999992. Its totient is φ = 22040019840.

The previous prime is 55100050391. The next prime is 55100050417. The reversal of 55100050400 is 405000155.

It is a super-4 number, since 4×55100050400⁴ (a number of 44 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34436732 + ... + 34438331.

It is an arithmetic number, because the mean of its divisors is an integer number (3736472222).

Almost surely, 2^55100050400 is an apocalyptic number.

55100050400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55100050400 is an abundant number, since it is smaller than the sum of its proper divisors (79412949592).

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

55100050400 is a wasteful number, since it uses less digits than its factorization.

55100050400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68875083 (or 68875070 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 20.

Adding to 55100050400 its reverse (405000155), we get a palindrome (55505050555).

The spelling of 55100050400 in words is "fifty-five billion, one hundred million, fifty thousand, four hundred".