53722 has 4 divisors (see below), whose sum is σ = 80586. Its totient is φ = 26860.

The previous prime is 53719. The next prime is 53731. The reversal of 53722 is 22735.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22735 = 5 ⋅4547.

It can be written as a sum of positive squares in only one way, i.e., 53361 + 361 = 231^2 + 19^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 53722.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13429 + ... + 13432.

2⁵³⁷²² is an apocalyptic number.

53722 is a deficient number, since it is larger than the sum of its proper divisors (26864).

53722 is a wasteful number, since it uses less digits than its factorization.

53722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26863.

The product of its digits is 420, while the sum is 19.

The square root of 53722 is about 231.7800681681. The cubic root of 53722 is about 37.7326572678.

The spelling of 53722 in words is "fifty-three thousand, seven hundred twenty-two".