53261223400 has 432 divisors, whose sum is σ = 160391296800. Its totient is φ = 16095974400.

The previous prime is 53261223371. The next prime is 53261223409. The reversal of 53261223400 is 432216235.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (53261223409) by changing a digit.

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 107 ways as a sum of consecutive naturals, for example, 729605764 + ... + 729605836.

It is an arithmetic number, because the mean of its divisors is an integer number (371276150).

Almost surely, 2^53261223400 is an apocalyptic number.

53261223400 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 53261223400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80195648400).

53261223400 is an abundant number, since it is smaller than the sum of its proper divisors (107130073400).

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

53261223400 is a wasteful number, since it uses less digits than its factorization.

53261223400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 53261223400 its reverse (432216235), we get a palindrome (53693439635).

The spelling of 53261223400 in words is "fifty-three billion, two hundred sixty-one million, two hundred twenty-three thousand, four hundred".