245722229 has 4 divisors (see below), whose sum is σ = 247896876. Its totient is φ = 243547584.

The previous prime is 245722219. The next prime is 245722261. The reversal of 245722229 is 922227542.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8254129 + 237468100 = 2873^2 + 15410^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245722229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245722219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1087154 + ... + 1087379.

It is an arithmetic number, because the mean of its divisors is an integer number (61974219).

Almost surely, 2^245722229 is an apocalyptic number.

It is an amenable number.

245722229 is a deficient number, since it is larger than the sum of its proper divisors (2174647).

245722229 is a wasteful number, since it uses less digits than its factorization.

245722229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2174646.

The product of its digits is 40320, while the sum is 35.

The square root of 245722229 is about 15675.5296242264. The cubic root of 245722229 is about 626.3467314321.

The spelling of 245722229 in words is "two hundred forty-five million, seven hundred twenty-two thousand, two hundred twenty-nine".