245724901 has 2 divisors, whose sum is σ = 245724902. Its totient is φ = 245724900.

The previous prime is 245724889. The next prime is 245724923. The reversal of 245724901 is 109427542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 245674276 + 50625 = 15674^2 + 225^2 .

It is a cyclic number.

It is not a de Polignac number, because 245724901 - 2⁹ = 245724389 is a prime.

It is equal to p_13458193 and since 245724901 and 13458193 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245724991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122862450 + 122862451.

It is an arithmetic number, because the mean of its divisors is an integer number (122862451).

Almost surely, 2^245724901 is an apocalyptic number.

It is an amenable number.

245724901 is a deficient number, since it is larger than the sum of its proper divisors (1).

245724901 is an equidigital number, since it uses as much as digits as its factorization.

245724901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 245724901 is about 15675.6148523750. The cubic root of 245724901 is about 626.3490017360.

The spelling of 245724901 in words is "two hundred forty-five million, seven hundred twenty-four thousand, nine hundred one".