53540530 has 16 divisors (see below), whose sum is σ = 97227864. Its totient is φ = 21226240.

The previous prime is 53540521. The next prime is 53540549. The reversal of 53540530 is 3504535.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 38725729 + 14814801 = 6223^2 + 3849^2 .

It is a junction number, because it is equal to n+sod(n) for n = 53540495 and 53540504.

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, 22561 + ... + 24820.

Almost surely, 2^53540530 is an apocalyptic number.

53540530 is a deficient number, since it is larger than the sum of its proper divisors (43687334).

53540530 is a wasteful number, since it uses less digits than its factorization.

53540530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47501.

The product of its (nonzero) digits is 4500, while the sum is 25.

The square root of 53540530 is about 7317.1394683988. The cubic root of 53540530 is about 376.9012304962.

The spelling of 53540530 in words is "fifty-three million, five hundred forty thousand, five hundred thirty".