53111320 has 16 divisors (see below), whose sum is σ = 119500560. Its totient is φ = 21244512.

The previous prime is 53111293. The next prime is 53111323. The reversal of 53111320 is 2311135.

It is a junction number, because it is equal to n+sod(n) for n = 53111294 and 53111303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53111323) 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 3 ways as a sum of consecutive naturals, for example, 663852 + ... + 663931.

It is an arithmetic number, because the mean of its divisors is an integer number (7468785).

Almost surely, 2^53111320 is an apocalyptic number.

It is an amenable number.

53111320 is an abundant number, since it is smaller than the sum of its proper divisors (66389240).

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

53111320 is a wasteful number, since it uses less digits than its factorization.

53111320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1327794 (or 1327790 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 53111320 is about 7287.7513678775. The cubic root of 53111320 is about 375.8913787642.

Adding to 53111320 its reverse (2311135), we get a palindrome (55422455).

The spelling of 53111320 in words is "fifty-three million, one hundred eleven thousand, three hundred twenty".