55148400 has 90 divisors (see below), whose sum is σ = 191392760. Its totient is φ = 14705280.

The previous prime is 55148383. The next prime is 55148413. The reversal of 55148400 is 484155.

It is a tau number, because it is divible by the number of its divisors (90).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4060 + ... + 11259.

Almost surely, 2^55148400 is an apocalyptic number.

55148400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55148400 is an abundant number, since it is smaller than the sum of its proper divisors (136244360).

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

55148400 is a wasteful number, since it uses less digits than its factorization.

55148400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15343 (or 15329 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 55148400 is about 7426.1968732320. The cubic root of 55148400 is about 380.6369741515.

The spelling of 55148400 in words is "fifty-five million, one hundred forty-eight thousand, four hundred".