53325540 has 60 divisors (see below), whose sum is σ = 167289276. Its totient is φ = 14219712.

The previous prime is 53325539. The next prime is 53325541. The reversal of 53325540 is 4552335.

It is an interprime number because it is at equal distance from previous prime (53325539) and next prime (53325541).

It can be written as a sum of positive squares in 2 ways, for example, as 23970816 + 29354724 = 4896^2 + 5418^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-2 number, since 2×53325540² = 5687226432583200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (53325541) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 14839 + ... + 18078.

Almost surely, 2^53325540 is an apocalyptic number.

It is an amenable number.

53325540 is an abundant number, since it is smaller than the sum of its proper divisors (113963736).

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

53325540 is a wasteful number, since it uses less digits than its factorization.

53325540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32938 (or 32927 counting only the distinct ones).

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

The square root of 53325540 is about 7302.4338408506. The cubic root of 53325540 is about 376.3960761407.

Adding to 53325540 its reverse (4552335), we get a palindrome (57877875).

The spelling of 53325540 in words is "fifty-three million, three hundred twenty-five thousand, five hundred forty".