245243533 has 2 divisors, whose sum is σ = 245243534. Its totient is φ = 245243532.

The previous prime is 245243521. The next prime is 245243539. The reversal of 245243533 is 335342542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 223741764 + 21501769 = 14958^2 + 4637^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245243533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 245243495 and 245243504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245243539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122621766 + 122621767.

It is an arithmetic number, because the mean of its divisors is an integer number (122621767).

Almost surely, 2^245243533 is an apocalyptic number.

It is an amenable number.

245243533 is a deficient number, since it is larger than the sum of its proper divisors (1).

245243533 is an equidigital number, since it uses as much as digits as its factorization.

245243533 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 31.

The square root of 245243533 is about 15660.2532865851. The cubic root of 245243533 is about 625.9397344904.

Subtracting 245243533 from its reverse (335342542), we obtain a palindrome (90099009).

The spelling of 245243533 in words is "two hundred forty-five million, two hundred forty-three thousand, five hundred thirty-three".