52251052551240 has 32 divisors (see below), whose sum is σ = 156753157654080. Its totient is φ = 13933614013632.

The previous prime is 52251052551209. The next prime is 52251052551277. The reversal of 52251052551240 is 4215525015225.

It is a super-2 number, since 2×52251052551240² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217712718844 + ... + 217712719083.

It is an arithmetic number, because the mean of its divisors is an integer number (4898536176690).

Almost surely, 2^{52251052551240} is an apocalyptic number.

It is an amenable number.

52251052551240 is an abundant number, since it is smaller than the sum of its proper divisors (104502105102840).

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

52251052551240 is a wasteful number, since it uses less digits than its factorization.

52251052551240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435425437941 (or 435425437937 counting only the distinct ones).

The product of its (nonzero) digits is 200000, while the sum is 39.

Adding to 52251052551240 its reverse (4215525015225), we get a palindrome (56466577566465).

The spelling of 52251052551240 in words is "fifty-two trillion, two hundred fifty-one billion, fifty-two million, five hundred fifty-one thousand, two hundred forty".