53306530 has 16 divisors (see below), whose sum is σ = 96229944. Its totient is φ = 21260800.

The previous prime is 53306527. The next prime is 53306531. The reversal of 53306530 is 3560335.

It can be written as a sum of positive squares in 4 ways, for example, as 29909961 + 23396569 = 5469^2 + 4837^2 .

It is a super-2 number, since 2×53306530² = 5683172281281800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53306495 and 53306504.

It is not an unprimeable number, because it can be changed into a prime (53306531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4021 + ... + 11080.

Almost surely, 2^53306530 is an apocalyptic number.

53306530 is a deficient number, since it is larger than the sum of its proper divisors (42923414).

53306530 is a wasteful number, since it uses less digits than its factorization.

53306530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15461.

The product of its (nonzero) digits is 4050, while the sum is 25.

The square root of 53306530 is about 7301.1321039959. The cubic root of 53306530 is about 376.3513437302.

Adding to 53306530 its reverse (3560335), we get a palindrome (56866865).

The spelling of 53306530 in words is "fifty-three million, three hundred six thousand, five hundred thirty".