52404560 has 80 divisors (see below), whose sum is σ = 134522640. Its totient is φ = 18862080.

The previous prime is 52404497. The next prime is 52404563. The reversal of 52404560 is 6540425.

It can be written as a sum of positive squares in 8 ways, for example, as 2334784 + 50069776 = 1528^2 + 7076^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52404563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42026 + ... + 43254.

It is an arithmetic number, because the mean of its divisors is an integer number (1681533).

Almost surely, 2^52404560 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 52404560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67261320).

52404560 is an abundant number, since it is smaller than the sum of its proper divisors (82118080).

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

52404560 is a wasteful number, since it uses less digits than its factorization.

52404560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296 (or 1290 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 52404560 is about 7239.0993914989. The cubic root of 52404560 is about 374.2165807809.

Adding to 52404560 its reverse (6540425), we get a palindrome (58944985).

The spelling of 52404560 in words is "fifty-two million, four hundred four thousand, five hundred sixty".