53051421540 has 96 divisors (see below), whose sum is σ = 160079867136. Its totient is φ = 13049879040.

The previous prime is 53051421523. The next prime is 53051421547. The reversal of 53051421540 is 4512415035.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 53051421498 and 53051421507.

It is not an unprimeable number, because it can be changed into a prime (53051421547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1156074 + ... + 1201086.

It is an arithmetic number, because the mean of its divisors is an integer number (1667498616).

Almost surely, 2^53051421540 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 53051421540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80039933568).

53051421540 is an abundant number, since it is smaller than the sum of its proper divisors (107028445596).

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

53051421540 is a wasteful number, since it uses less digits than its factorization.

53051421540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46549 (or 46547 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 53051421540 its reverse (4512415035), we get a palindrome (57563836575).

The spelling of 53051421540 in words is "fifty-three billion, fifty-one million, four hundred twenty-one thousand, five hundred forty".