52118740 has 24 divisors (see below), whose sum is σ = 109694592. Its totient is φ = 20800800.

The previous prime is 52118699. The next prime is 52118741. The reversal of 52118740 is 4781125.

It is a junction number, because it is equal to n+sod(n) for n = 52118699 and 52118708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52118741) 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, 7065 + ... + 12415.

It is an arithmetic number, because the mean of its divisors is an integer number (4570608).

Almost surely, 2^52118740 is an apocalyptic number.

It is an amenable number.

52118740 is an abundant number, since it is smaller than the sum of its proper divisors (57575852).

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

52118740 is a wasteful number, since it uses less digits than its factorization.

52118740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5847 (or 5845 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 52118740 is about 7219.3309939357. The cubic root of 52118740 is about 373.5350012330.

Adding to 52118740 its reverse (4781125), we get a palindrome (56899865).

The spelling of 52118740 in words is "fifty-two million, one hundred eighteen thousand, seven hundred forty".