52907520 has 120 divisors (see below), whose sum is σ = 171201096. Its totient is φ = 13938688.

The previous prime is 52907509. The next prime is 52907527. The reversal of 52907520 is 2570925.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52907527) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 637399 + ... + 637481.

Almost surely, 2^52907520 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 52907520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85600548).

52907520 is an abundant number, since it is smaller than the sum of its proper divisors (118293576).

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

52907520 is an frugal number, since it uses more digits than its factorization.

52907520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192 (or 93 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 52907520 is about 7273.7555636686. The cubic root of 52907520 is about 375.4099694147.

Multiplying 52907520 by its sum of digits (30), we get a square (1587225600 = 39840²).

52907520 divided by its sum of digits (30) gives a square (1763584 = 1328²).

The spelling of 52907520 in words is "fifty-two million, nine hundred seven thousand, five hundred twenty".