52647872 has 28 divisors (see below), whose sum is σ = 105445560. Its totient is φ = 26078976.

The previous prime is 52647871. The next prime is 52647877. The reversal of 52647872 is 27874625.

It is a super-2 number, since 2×52647872² = 5543596852256768, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52647871) 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, 3203 + ... + 10749.

Almost surely, 2^52647872 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 52647872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52722780).

52647872 is an abundant number, since it is smaller than the sum of its proper divisors (52797688).

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

52647872 is a wasteful number, since it uses less digits than its factorization.

52647872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7668 (or 7658 counting only the distinct ones).

The product of its digits is 188160, while the sum is 41.

The square root of 52647872 is about 7255.8853353674. The cubic root of 52647872 is about 374.7948436346.

The spelling of 52647872 in words is "fifty-two million, six hundred forty-seven thousand, eight hundred seventy-two".