53423320 has 32 divisors (see below), whose sum is σ = 122245200. Its totient is φ = 21006208.

The previous prime is 53423317. The next prime is 53423339. The reversal of 53423320 is 2332435.

It is a super-2 number, since 2×53423320² = 5708102239644800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53423291 and 53423300.

It is a congruent number.

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, 8959 + ... + 13678.

Almost surely, 2^53423320 is an apocalyptic number.

It is an amenable number.

53423320 is an abundant number, since it is smaller than the sum of its proper divisors (68821880).

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

53423320 is a wasteful number, since it uses less digits than its factorization.

53423320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22707 (or 22703 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 22.

The square root of 53423320 is about 7309.1258027209. The cubic root of 53423320 is about 376.6259943379.

Adding to 53423320 its reverse (2332435), we get a palindrome (55755755).

The spelling of 53423320 in words is "fifty-three million, four hundred twenty-three thousand, three hundred twenty".