52911648 has 72 divisors (see below), whose sum is σ = 154171836. Its totient is φ = 17203200.

The previous prime is 52911647. The next prime is 52911673. The reversal of 52911648 is 84611925.

52911648 is a `hidden beast` number, since 5 + 2 + 9 + 1 + 1 + 648 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 52012944 + 898704 = 7212^2 + 948^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (52911643) 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, 9568 + ... + 14048.

Almost surely, 2^52911648 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 52911648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77085918).

52911648 is an abundant number, since it is smaller than the sum of its proper divisors (101260188).

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

52911648 is a wasteful number, since it uses less digits than its factorization.

52911648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4538 (or 4527 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 52911648 is about 7274.0393180131. The cubic root of 52911648 is about 375.4197326900.

The spelling of 52911648 in words is "fifty-two million, nine hundred eleven thousand, six hundred forty-eight".