5201720400 has 60 divisors (see below), whose sum is σ = 16662848192. Its totient is φ = 1387125120.

The previous prime is 5201720399. The next prime is 5201720437. The reversal of 5201720400 is 40271025.

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2166184 + ... + 2168583.

Almost surely, 2^5201720400 is an apocalyptic number.

5201720400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

5201720400 is an abundant number, since it is smaller than the sum of its proper divisors (11461127792).

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

5201720400 is a wasteful number, since it uses less digits than its factorization.

5201720400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4334788 (or 4334777 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 5201720400 is about 72122.9533505111. The cubic root of 5201720400 is about 1732.6692508659.

Adding to 5201720400 its reverse (40271025), we get a palindrome (5241991425).

The spelling of 5201720400 in words is "five billion, two hundred one million, seven hundred twenty thousand, four hundred".