53205040 has 40 divisors (see below), whose sum is σ = 141374880. Its totient is φ = 18241536.

The previous prime is 53205029. The next prime is 53205059. The reversal of 53205040 is 4050235.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 53204999 and 53205017.

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, 46945 + ... + 48064.

It is an arithmetic number, because the mean of its divisors is an integer number (3534372).

Almost surely, 2^53205040 is an apocalyptic number.

It is an amenable number.

53205040 is an abundant number, since it is smaller than the sum of its proper divisors (88169840).

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

53205040 is a wasteful number, since it uses less digits than its factorization.

53205040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95029 (or 95023 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 53205040 is about 7294.1785006949. The cubic root of 53205040 is about 376.1123475955.

Adding to 53205040 its reverse (4050235), we get a palindrome (57255275).

The spelling of 53205040 in words is "fifty-three million, two hundred five thousand, forty".