5278121400 has 48 divisors (see below), whose sum is σ = 16362178200. Its totient is φ = 1407498880.

The previous prime is 5278121389. The next prime is 5278121449. The reversal of 5278121400 is 41218725.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4397835 + ... + 4399034.

Almost surely, 2^5278121400 is an apocalyptic number.

5278121400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

5278121400 is an abundant number, since it is smaller than the sum of its proper divisors (11084056800).

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

5278121400 is a wasteful number, since it uses less digits than its factorization.

5278121400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8796888 (or 8796879 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 5278121400 is about 72650.6806575135. The cubic root of 5278121400 is about 1741.1109961155.

The spelling of 5278121400 in words is "five billion, two hundred seventy-eight million, one hundred twenty-one thousand, four hundred".