52605440 has 40 divisors (see below), whose sum is σ = 126135900. Its totient is φ = 21041152.

The previous prime is 52605407. The next prime is 52605457. The reversal of 52605440 is 4450625.

It can be written as a sum of positive squares in 2 ways, for example, as 49336576 + 3268864 = 7024^2 + 1808^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7715 + ... + 12834.

Almost surely, 2^52605440 is an apocalyptic number.

It is an amenable number.

52605440 is an abundant number, since it is smaller than the sum of its proper divisors (73530460).

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

52605440 is an equidigital number, since it uses as much as digits as its factorization.

52605440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20572 (or 20556 counting only the distinct ones).

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

The square root of 52605440 is about 7252.9607747457. The cubic root of 52605440 is about 374.6941268751.

The spelling of 52605440 in words is "fifty-two million, six hundred five thousand, four hundred forty".