53131122 has 96 divisors (see below), whose sum is σ = 131616576. Its totient is φ = 15350400.

The previous prime is 53131109. The next prime is 53131123. The reversal of 53131122 is 22113135.

It is a super-2 number, since 2×53131122² = 5645832249957768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 53131095 and 53131104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53131123) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 640093 + ... + 640175.

It is an arithmetic number, because the mean of its divisors is an integer number (1371006).

Almost surely, 2^53131122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53131122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65808288).

53131122 is an abundant number, since it is smaller than the sum of its proper divisors (78485454).

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

53131122 is a wasteful number, since it uses less digits than its factorization.

53131122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216 (or 213 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 53131122 is about 7289.1098221937. The cubic root of 53131122 is about 375.9380886822.

Adding to 53131122 its reverse (22113135), we get a palindrome (75244257).

The spelling of 53131122 in words is "fifty-three million, one hundred thirty-one thousand, one hundred twenty-two".