52417520 has 20 divisors (see below), whose sum is σ = 121870920. Its totient is φ = 20966976.

The previous prime is 52417513. The next prime is 52417531. The reversal of 52417520 is 2571425.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 52417520.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327530 + ... + 327689.

It is an arithmetic number, because the mean of its divisors is an integer number (6093546).

Almost surely, 2^52417520 is an apocalyptic number.

It is an amenable number.

52417520 is an abundant number, since it is smaller than the sum of its proper divisors (69453400).

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

52417520 is a wasteful number, since it uses less digits than its factorization.

52417520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655232 (or 655226 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 52417520 is about 7239.9944751360. The cubic root of 52417520 is about 374.2474269970.

Adding to 52417520 its reverse (2571425), we get a palindrome (54988945).

The spelling of 52417520 in words is "fifty-two million, four hundred seventeen thousand, five hundred twenty".