53125540 has 24 divisors (see below), whose sum is σ = 120146040. Its totient is φ = 19615488.

The previous prime is 53125529. The next prime is 53125543. The reversal of 53125540 is 4552135.

It can be written as a sum of positive squares in 4 ways, for example, as 12574116 + 40551424 = 3546^2 + 6368^2 .

It is not an unprimeable number, because it can be changed into a prime (53125543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101905 + ... + 102424.

It is an arithmetic number, because the mean of its divisors is an integer number (5006085).

Almost surely, 2^53125540 is an apocalyptic number.

It is an amenable number.

53125540 is an abundant number, since it is smaller than the sum of its proper divisors (67020500).

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

53125540 is a wasteful number, since it uses less digits than its factorization.

53125540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204351 (or 204349 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 53125540 is about 7288.7269121569. The cubic root of 53125540 is about 375.9249227647.

Adding to 53125540 its reverse (4552135), we get a palindrome (57677675).

The spelling of 53125540 in words is "fifty-three million, one hundred twenty-five thousand, five hundred forty".