53543140 has 48 divisors (see below), whose sum is σ = 135273600. Its totient is φ = 17390592.

The previous prime is 53543137. The next prime is 53543143. The reversal of 53543140 is 4134535.

It is an interprime number because it is at equal distance from previous prime (53543137) and next prime (53543143).

It is not an unprimeable number, because it can be changed into a prime (53543143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7405 + ... + 12724.

It is an arithmetic number, because the mean of its divisors is an integer number (2818200).

Almost surely, 2^53543140 is an apocalyptic number.

It is an amenable number.

53543140 is an abundant number, since it is smaller than the sum of its proper divisors (81730460).

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

53543140 is a wasteful number, since it uses less digits than its factorization.

53543140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20164 (or 20162 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 53543140 is about 7317.3178146094. The cubic root of 53543140 is about 376.9073548051.

Adding to 53543140 its reverse (4134535), we get a palindrome (57677675).

The spelling of 53543140 in words is "fifty-three million, five hundred forty-three thousand, one hundred forty".