52517388 has 72 divisors (see below), whose sum is σ = 153965056. Its totient is φ = 13638240.

The previous prime is 52517363. The next prime is 52517389. The reversal of 52517388 is 88371525.

It is not an unprimeable number, because it can be changed into a prime (52517389) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7581 + ... + 12747.

Almost surely, 2^52517388 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 52517388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76982528).

52517388 is an abundant number, since it is smaller than the sum of its proper divisors (101447668).

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

52517388 is a wasteful number, since it uses less digits than its factorization.

52517388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5203 (or 5190 counting only the distinct ones).

The product of its digits is 67200, while the sum is 39.

The square root of 52517388 is about 7246.8881597552. Note that the first 3 decimals coincide. The cubic root of 52517388 is about 374.4849533736.

The spelling of 52517388 in words is "fifty-two million, five hundred seventeen thousand, three hundred eighty-eight".