52138422 has 96 divisors (see below), whose sum is σ = 138625344. Its totient is φ = 13824000.

The previous prime is 52138417. The next prime is 52138423. The reversal of 52138422 is 22483125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52138423) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 216222 + ... + 216462.

It is an arithmetic number, because the mean of its divisors is an integer number (1444014).

Almost surely, 2^52138422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52138422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69312672).

52138422 is an abundant number, since it is smaller than the sum of its proper divisors (86486922).

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

52138422 is a wasteful number, since it uses less digits than its factorization.

52138422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374 (or 371 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 52138422 is about 7220.6940109660. The cubic root of 52138422 is about 373.5820156123.

The spelling of 52138422 in words is "fifty-two million, one hundred thirty-eight thousand, four hundred twenty-two".