245722 has 4 divisors (see below), whose sum is σ = 368586. Its totient is φ = 122860.

The previous prime is 245719. The next prime is 245723. The reversal of 245722 is 227542.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 136161 + 109561 = 369^2 + 331^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 245693 and 245702.

It is not an unprimeable number, because it can be changed into a prime (245723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61429 + ... + 61432.

2²⁴⁵⁷²² is an apocalyptic number.

245722 is a deficient number, since it is larger than the sum of its proper divisors (122864).

245722 is a wasteful number, since it uses less digits than its factorization.

245722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122863.

The product of its digits is 1120, while the sum is 22.

The square root of 245722 is about 495.7035404352. The cubic root of 245722 is about 62.6346536858.

The spelling of 245722 in words is "two hundred forty-five thousand, seven hundred twenty-two".