245062021 has 4 divisors (see below), whose sum is σ = 259477452. Its totient is φ = 230646592.

The previous prime is 245062009. The next prime is 245062039. The reversal of 245062021 is 120260542.

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 217120225 + 27941796 = 14735^2 + 5286^2 .

It is a cyclic number.

It is not a de Polignac number, because 245062021 - 2¹⁷ = 244930949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245061983 and 245062001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245062001) 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, 7207690 + ... + 7207723.

It is an arithmetic number, because the mean of its divisors is an integer number (64869363).

Almost surely, 2^245062021 is an apocalyptic number.

It is an amenable number.

245062021 is a deficient number, since it is larger than the sum of its proper divisors (14415431).

245062021 is a wasteful number, since it uses less digits than its factorization.

245062021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14415430.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 245062021 is about 15654.4569053034. The cubic root of 245062021 is about 625.7852708663.

The spelling of 245062021 in words is "two hundred forty-five million, sixty-two thousand, twenty-one".