53421251200 has 192 divisors, whose sum is σ = 142673234400. Its totient is φ = 19695882240.

The previous prime is 53421251189. The next prime is 53421251201. The reversal of 53421251200 is 215212435.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (53421251201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2237727 + ... + 2261473.

Almost surely, 2^53421251200 is an apocalyptic number.

53421251200 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 53421251200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71336617200).

53421251200 is an abundant number, since it is smaller than the sum of its proper divisors (89251983200).

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

53421251200 is a wasteful number, since it uses less digits than its factorization.

53421251200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23827 (or 23810 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

Adding to 53421251200 its reverse (215212435), we get a palindrome (53636463635).

The spelling of 53421251200 in words is "fifty-three billion, four hundred twenty-one million, two hundred fifty-one thousand, two hundred".