52617520 has 20 divisors (see below), whose sum is σ = 122335920. Its totient is φ = 21046976.

The previous prime is 52617511. The next prime is 52617527. The reversal of 52617520 is 2571625.

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

It is not an unprimeable number, because it can be changed into a prime (52617527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328780 + ... + 328939.

It is an arithmetic number, because the mean of its divisors is an integer number (6116796).

Almost surely, 2^52617520 is an apocalyptic number.

It is an amenable number.

52617520 is an abundant number, since it is smaller than the sum of its proper divisors (69718400).

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

52617520 is a wasteful number, since it uses less digits than its factorization.

52617520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657732 (or 657726 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 52617520 is about 7253.7934903056. The cubic root of 52617520 is about 374.7228055228.

The spelling of 52617520 in words is "fifty-two million, six hundred seventeen thousand, five hundred twenty".