53501055420 has 96 divisors (see below), whose sum is σ = 156503430720. Its totient is φ = 13638553600.

The previous prime is 53501055403. The next prime is 53501055451. The reversal of 53501055420 is 2455010535.

It is a happy number.

It is a super-2 number, since 2×53501055420² (a number of 22 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 23524 + ... + 327956.

It is an arithmetic number, because the mean of its divisors is an integer number (1630244070).

Almost surely, 2^53501055420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53501055420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78251715360).

53501055420 is an abundant number, since it is smaller than the sum of its proper divisors (103002375300).

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

53501055420 is a wasteful number, since it uses less digits than its factorization.

53501055420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304575 (or 304573 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 30.

Adding to 53501055420 its reverse (2455010535), we get a palindrome (55956065955).

The spelling of 53501055420 in words is "fifty-three billion, five hundred one million, fifty-five thousand, four hundred twenty".