55878249400 has 24 divisors (see below), whose sum is σ = 129916930320. Its totient is φ = 22351299680.

The previous prime is 55878249359. The next prime is 55878249437. The reversal of 55878249400 is 494287855.

It is a congruent 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 5 ways as a sum of consecutive naturals, for example, 139695424 + ... + 139695823.

It is an arithmetic number, because the mean of its divisors is an integer number (5413205430).

Almost surely, 2^55878249400 is an apocalyptic number.

55878249400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55878249400 is an abundant number, since it is smaller than the sum of its proper divisors (74038680920).

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

55878249400 is a wasteful number, since it uses less digits than its factorization.

55878249400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279391263 (or 279391254 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 52.

The spelling of 55878249400 in words is "fifty-five billion, eight hundred seventy-eight million, two hundred forty-nine thousand, four hundred".