245023243 has 2 divisors, whose sum is σ = 245023244. Its totient is φ = 245023242.

The previous prime is 245023217. The next prime is 245023249. The reversal of 245023243 is 342320542.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245023243 is a prime.

It is a super-2 number, since 2×245023243² = 120072779220474098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (245023249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122511621 + 122511622.

It is an arithmetic number, because the mean of its divisors is an integer number (122511622).

Almost surely, 2^245023243 is an apocalyptic number.

245023243 is a deficient number, since it is larger than the sum of its proper divisors (1).

245023243 is an equidigital number, since it uses as much as digits as its factorization.

245023243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 245023243 is about 15653.2182952899. The cubic root of 245023243 is about 625.7522615608.

Adding to 245023243 its reverse (342320542), we get a palindrome (587343785).

The spelling of 245023243 in words is "two hundred forty-five million, twenty-three thousand, two hundred forty-three".