53032140 has 72 divisors (see below), whose sum is σ = 183849120. Its totient is φ = 12121344.

The previous prime is 53032139. The next prime is 53032141. The reversal of 53032140 is 4123035.

It is an interprime number because it is at equal distance from previous prime (53032139) and next prime (53032141).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (53032141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19785 + ... + 22304.

It is an arithmetic number, because the mean of its divisors is an integer number (2553460).

Almost surely, 2^53032140 is an apocalyptic number.

It is an amenable number.

53032140 is an abundant number, since it is smaller than the sum of its proper divisors (130816980).

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

53032140 is a wasteful number, since it uses less digits than its factorization.

53032140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42111 (or 42106 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 53032140 is about 7282.3169389968. The cubic root of 53032140 is about 375.7044890251.

Adding to 53032140 its reverse (4123035), we get a palindrome (57155175).

The spelling of 53032140 in words is "fifty-three million, thirty-two thousand, one hundred forty".