52810640 has 40 divisors (see below), whose sum is σ = 123172920. Its totient is φ = 21057536.

The previous prime is 52810607. The next prime is 52810649. The reversal of 52810640 is 4601825.

It can be written as a sum of positive squares in 4 ways, for example, as 11182336 + 41628304 = 3344^2 + 6452^2 .

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

It is not an unprimeable number, because it can be changed into a prime (52810649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30272 + ... + 31968.

It is an arithmetic number, because the mean of its divisors is an integer number (3079323).

Almost surely, 2^52810640 is an apocalyptic number.

It is an amenable number.

52810640 is an abundant number, since it is smaller than the sum of its proper divisors (70362280).

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

52810640 is a wasteful number, since it uses less digits than its factorization.

52810640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2099 (or 2093 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 52810640 is about 7267.0929538571. The cubic root of 52810640 is about 375.1806892194.

The spelling of 52810640 in words is "fifty-two million, eight hundred ten thousand, six hundred forty".