53313140 has 24 divisors (see below), whose sum is σ = 113115912. Its totient is φ = 21104640.

The previous prime is 53313137. The next prime is 53313151. The reversal of 53313140 is 4131335.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 16613776 + 36699364 = 4076^2 + 6058^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11801 + ... + 15680.

It is an arithmetic number, because the mean of its divisors is an integer number (4713163).

Almost surely, 2^53313140 is an apocalyptic number.

It is an amenable number.

53313140 is an abundant number, since it is smaller than the sum of its proper divisors (59802772).

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

53313140 is a wasteful number, since it uses less digits than its factorization.

53313140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27587 (or 27585 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 53313140 is about 7301.5847594889. The cubic root of 53313140 is about 376.3668989199.

Adding to 53313140 its reverse (4131335), we get a palindrome (57444475).

The spelling of 53313140 in words is "fifty-three million, three hundred thirteen thousand, one hundred forty".