53131722 has 16 divisors (see below), whose sum is σ = 121444032. Its totient is φ = 15180480.

The previous prime is 53131717. The next prime is 53131747. The reversal of 53131722 is 22713135.

It is a junction number, because it is equal to n+sod(n) for n = 53131692 and 53131701.

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, 632479 + ... + 632562.

It is an arithmetic number, because the mean of its divisors is an integer number (7590252).

Almost surely, 2^53131722 is an apocalyptic number.

53131722 is an abundant number, since it is smaller than the sum of its proper divisors (68312310).

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

53131722 is a wasteful number, since it uses less digits than its factorization.

53131722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265053.

The product of its digits is 1260, while the sum is 24.

The square root of 53131722 is about 7289.1509793665. The cubic root of 53131722 is about 375.9395038101.

Adding to 53131722 its reverse (22713135), we get a palindrome (75844857).

The spelling of 53131722 in words is "fifty-three million, one hundred thirty-one thousand, seven hundred twenty-two".