52113432 has 128 divisors (see below), whose sum is σ = 160496640. Its totient is φ = 13762560.

The previous prime is 52113421. The next prime is 52113437. The reversal of 52113432 is 23431125.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 52113399 and 52113408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52113437) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 202648 + ... + 202904.

It is an arithmetic number, because the mean of its divisors is an integer number (1253880).

Almost surely, 2^52113432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52113432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80248320).

52113432 is an abundant number, since it is smaller than the sum of its proper divisors (108383208).

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

52113432 is a wasteful number, since it uses less digits than its factorization.

52113432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361 (or 357 counting only the distinct ones).

The product of its digits is 720, while the sum is 21.

The square root of 52113432 is about 7218.9633604833. The cubic root of 52113432 is about 373.5223199907.

Adding to 52113432 its reverse (23431125), we get a palindrome (75544557).

The spelling of 52113432 in words is "fifty-two million, one hundred thirteen thousand, four hundred thirty-two".