53545140 has 72 divisors (see below), whose sum is σ = 177192288. Its totient is φ = 12980160.

The previous prime is 53545133. The next prime is 53545157. The reversal of 53545140 is 4154535.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11542 + ... + 15501.

It is an arithmetic number, because the mean of its divisors is an integer number (2461004).

Almost surely, 2^53545140 is an apocalyptic number.

It is an amenable number.

53545140 is an abundant number, since it is smaller than the sum of its proper divisors (123647148).

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

53545140 is a wasteful number, since it uses less digits than its factorization.

53545140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27069 (or 27064 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 53545140 is about 7317.4544754306. The cubic root of 53545140 is about 376.9120476274.

Adding to 53545140 its reverse (4154535), we get a palindrome (57699675).

The spelling of 53545140 in words is "fifty-three million, five hundred forty-five thousand, one hundred forty".