53723220 has 24 divisors (see below), whose sum is σ = 150425184. Its totient is φ = 14326176.

The previous prime is 53723191. The next prime is 53723221. The reversal of 53723220 is 2232735.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53723221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 447634 + ... + 447753.

It is an arithmetic number, because the mean of its divisors is an integer number (6267716).

Almost surely, 2^53723220 is an apocalyptic number.

It is an amenable number.

53723220 is an abundant number, since it is smaller than the sum of its proper divisors (96701964).

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

53723220 is a wasteful number, since it uses less digits than its factorization.

53723220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895399 (or 895397 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 24.

The square root of 53723220 is about 7329.6125409192. The cubic root of 53723220 is about 377.3294289560.

Adding to 53723220 its reverse (2232735), we get a palindrome (55955955).

The spelling of 53723220 in words is "fifty-three million, seven hundred twenty-three thousand, two hundred twenty".