53253540 has 36 divisors (see below), whose sum is σ = 161536284. Its totient is φ = 14200896.

The previous prime is 53253539. The next prime is 53253569. The reversal of 53253540 is 4535235.

It can be written as a sum of positive squares in 2 ways, for example, as 11573604 + 41679936 = 3402^2 + 6456^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 147747 + ... + 148106.

It is an arithmetic number, because the mean of its divisors is an integer number (4487119).

Almost surely, 2^53253540 is an apocalyptic number.

It is an amenable number.

53253540 is an abundant number, since it is smaller than the sum of its proper divisors (108282744).

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

53253540 is a wasteful number, since it uses less digits than its factorization.

53253540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295868 (or 295863 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 27.

The square root of 53253540 is about 7297.5023124354. The cubic root of 53253540 is about 376.2265968527.

Adding to 53253540 its reverse (4535235), we get a palindrome (57788775).

The spelling of 53253540 in words is "fifty-three million, two hundred fifty-three thousand, five hundred forty".