55145050400 has 72 divisors (see below), whose sum is σ = 146861319024. Its totient is φ = 20052742400.

The previous prime is 55145050399. The next prime is 55145050423. The reversal of 55145050400 is 405054155.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3124442 + ... + 3142041.

It is an arithmetic number, because the mean of its divisors is an integer number (2039740542).

Almost surely, 2^55145050400 is an apocalyptic number.

55145050400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55145050400 is an abundant number, since it is smaller than the sum of its proper divisors (91716268624).

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

55145050400 is a wasteful number, since it uses less digits than its factorization.

55145050400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6266514 (or 6266501 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 29.

The spelling of 55145050400 in words is "fifty-five billion, one hundred forty-five million, fifty thousand, four hundred".