5253521400 has 144 divisors (see below), whose sum is σ = 17663780160. Its totient is φ = 1399296000.

The previous prime is 5253521393. The next prime is 5253521411. The reversal of 5253521400 is 41253525.

It is a happy number.

5253521400 is a `hidden beast` number, since 5 + 253 + 5 + 2 + 1 + 400 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2880889 + ... + 2882711.

It is an arithmetic number, because the mean of its divisors is an integer number (122665140).

Almost surely, 2^5253521400 is an apocalyptic number.

5253521400 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5253521400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8831890080).

5253521400 is an abundant number, since it is smaller than the sum of its proper divisors (12410258760).

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

5253521400 is a wasteful number, since it uses less digits than its factorization.

5253521400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3446 (or 3434 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 5253521400 is about 72481.1796261623. The cubic root of 5253521400 is about 1738.4018222689.

Adding to 5253521400 its reverse (41253525), we get a palindrome (5294774925).

The spelling of 5253521400 in words is "five billion, two hundred fifty-three million, five hundred twenty-one thousand, four hundred".