53239040 has 36 divisors (see below), whose sum is σ = 127527204. Its totient is φ = 21295104.

The previous prime is 53239037. The next prime is 53239049. The reversal of 53239040 is 4093235.

It can be written as a sum of positive squares in 2 ways, for example, as 14500864 + 38738176 = 3808^2 + 6224^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53239049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19517 + ... + 22076.

Almost surely, 2^53239040 is an apocalyptic number.

It is an amenable number.

53239040 is an abundant number, since it is smaller than the sum of its proper divisors (74288164).

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

53239040 is an equidigital number, since it uses as much as digits as its factorization.

53239040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41614 (or 41600 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 53239040 is about 7296.5087541920. The cubic root of 53239040 is about 376.1924471301.

The spelling of 53239040 in words is "fifty-three million, two hundred thirty-nine thousand, forty".