52140000 has 240 divisors, whose sum is σ = 188939520. Its totient is φ = 12480000.

The previous prime is 52139963. The next prime is 52140043. The reversal of 52140000 is 4125.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 659961 + ... + 660039.

It is an arithmetic number, because the mean of its divisors is an integer number (787248).

Almost surely, 2^52140000 is an apocalyptic number.

52140000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52140000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94469760).

52140000 is an abundant number, since it is smaller than the sum of its proper divisors (136799520).

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

52140000 is a wasteful number, since it uses less digits than its factorization.

52140000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 52140000 is about 7220.8032794143. The cubic root of 52140000 is about 373.5857844674.

Adding to 52140000 its reverse (4125), we get a palindrome (52144125).

The spelling of 52140000 in words is "fifty-two million, one hundred forty thousand".