52505133420 has 96 divisors (see below), whose sum is σ = 159869481408. Its totient is φ = 12821594112.

The previous prime is 52505133409. The next prime is 52505133449. The reversal of 52505133420 is 2433150525.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 657877 + ... + 733356.

It is an arithmetic number, because the mean of its divisors is an integer number (1665307098).

Almost surely, 2^52505133420 is an apocalyptic number.

It is an amenable number.

52505133420 is an abundant number, since it is smaller than the sum of its proper divisors (107364347988).

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

52505133420 is a wasteful number, since it uses less digits than its factorization.

52505133420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391299 (or 1391297 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

Adding to 52505133420 its reverse (2433150525), we get a palindrome (54938283945).

The spelling of 52505133420 in words is "fifty-two billion, five hundred five million, one hundred thirty-three thousand, four hundred twenty".