52250421521540 has 24 divisors (see below), whose sum is σ = 119700965668032. Its totient is φ = 19000153280480.

The previous prime is 52250421521527. The next prime is 52250421521549. The reversal of 52250421521540 is 4512512405225.

It is a super-2 number, since 2×52250421521540² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 52250421521494 and 52250421521503.

It is not an unprimeable number, because it can be changed into a prime (52250421521549) 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, 118750957784 + ... + 118750958223.

It is an arithmetic number, because the mean of its divisors is an integer number (4987540236168).

Almost surely, 2^{52250421521540} is an apocalyptic number.

It is an amenable number.

52250421521540 is an abundant number, since it is smaller than the sum of its proper divisors (67450544146492).

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

52250421521540 is a wasteful number, since it uses less digits than its factorization.

52250421521540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237501916027 (or 237501916025 counting only the distinct ones).

The product of its (nonzero) digits is 160000, while the sum is 38.

Adding to 52250421521540 its reverse (4512512405225), we get a palindrome (56762933926765).

The spelling of 52250421521540 in words is "fifty-two trillion, two hundred fifty billion, four hundred twenty-one million, five hundred twenty-one thousand, five hundred forty".