53943140 has 24 divisors (see below), whose sum is σ = 113560440. Its totient is φ = 21523968.

The previous prime is 53943139. The next prime is 53943157. The reversal of 53943140 is 4134935.

It can be written as a sum of positive squares in 4 ways, for example, as 565504 + 53377636 = 752^2 + 7306^2 .

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, 5546 + ... + 11774.

It is an arithmetic number, because the mean of its divisors is an integer number (4731685).

Almost surely, 2^53943140 is an apocalyptic number.

It is an amenable number.

53943140 is an abundant number, since it is smaller than the sum of its proper divisors (59617300).

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

53943140 is a wasteful number, since it uses less digits than its factorization.

53943140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6671 (or 6669 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 53943140 is about 7344.5993764126. The cubic root of 53943140 is about 377.8436033572.

The spelling of 53943140 in words is "fifty-three million, nine hundred forty-three thousand, one hundred forty".