52123421500 has 24 divisors (see below), whose sum is σ = 113837553648. Its totient is φ = 20849368400.

The previous prime is 52123421431. The next prime is 52123421507. The reversal of 52123421500 is 512432125.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52123421507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52122922 + ... + 52123921.

It is an arithmetic number, because the mean of its divisors is an integer number (4743231402).

Almost surely, 2^52123421500 is an apocalyptic number.

52123421500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

52123421500 is an abundant number, since it is smaller than the sum of its proper divisors (61714132148).

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

52123421500 is a wasteful number, since it uses less digits than its factorization.

52123421500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104246862 (or 104246850 counting only the distinct ones).

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

Adding to 52123421500 its reverse (512432125), we get a palindrome (52635853625).

The spelling of 52123421500 in words is "fifty-two billion, one hundred twenty-three million, four hundred twenty-one thousand, five hundred".