52520556 has 48 divisors (see below), whose sum is σ = 134563968. Its totient is φ = 15811200.

The previous prime is 52520527. The next prime is 52520597. The reversal of 52520556 is 65502525.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20296 + ... + 22736.

It is an arithmetic number, because the mean of its divisors is an integer number (2803416).

Almost surely, 2^52520556 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 52520556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67281984).

52520556 is an abundant number, since it is smaller than the sum of its proper divisors (82043412).

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

52520556 is a wasteful number, since it uses less digits than its factorization.

52520556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2622 (or 2620 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 30.

The square root of 52520556 is about 7247.1067330349. The cubic root of 52520556 is about 374.4924832256.

The spelling of 52520556 in words is "fifty-two million, five hundred twenty thousand, five hundred fifty-six".