52720536 has 96 divisors (see below), whose sum is σ = 152959680. Its totient is φ = 15014400.

The previous prime is 52720529. The next prime is 52720541. The reversal of 52720536 is 63502725.

It is a super-2 number, since 2×52720536² = 5558909832254592, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75951 + ... + 76641.

It is an arithmetic number, because the mean of its divisors is an integer number (1593330).

Almost surely, 2^52720536 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 52720536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76479840).

52720536 is an abundant number, since it is smaller than the sum of its proper divisors (100239144).

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

52720536 is a wasteful number, since it uses less digits than its factorization.

52720536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745 (or 724 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 30.

The square root of 52720536 is about 7260.8908544338. The cubic root of 52720536 is about 374.9671935745.

The spelling of 52720536 in words is "fifty-two million, seven hundred twenty thousand, five hundred thirty-six".