52917940 has 96 divisors (see below), whose sum is σ = 125846784. Its totient is φ = 18585600.

The previous prime is 52917929. The next prime is 52917941. The reversal of 52917940 is 4971925.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 52917940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52917941) 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, 523890 + ... + 523990.

It is an arithmetic number, because the mean of its divisors is an integer number (1310904).

Almost surely, 2^52917940 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 52917940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62923392).

52917940 is an abundant number, since it is smaller than the sum of its proper divisors (72928844).

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

52917940 is a wasteful number, since it uses less digits than its factorization.

52917940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 52917940 is about 7274.4718021311. The cubic root of 52917940 is about 375.4346131396.

It can be divided in two parts, 5291 and 7940, that added together give a palindrome (13231).

The spelling of 52917940 in words is "fifty-two million, nine hundred seventeen thousand, nine hundred forty".