52451142140 has 48 divisors (see below), whose sum is σ = 110598566400. Its totient is φ = 20894678592.

The previous prime is 52451142071. The next prime is 52451142157. The reversal of 52451142140 is 4124115425.

It is a happy number.

It is a super-2 number, since 2×52451142140² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6019667 + ... + 6028373.

It is an arithmetic number, because the mean of its divisors is an integer number (2304136800).

Almost surely, 2^52451142140 is an apocalyptic number.

It is an amenable number.

52451142140 is an abundant number, since it is smaller than the sum of its proper divisors (58147424260).

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

52451142140 is a wasteful number, since it uses less digits than its factorization.

52451142140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9914 (or 9912 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

Adding to 52451142140 its reverse (4124115425), we get a palindrome (56575257565).

The spelling of 52451142140 in words is "fifty-two billion, four hundred fifty-one million, one hundred forty-two thousand, one hundred forty".