245124689 has 2 divisors, whose sum is σ = 245124690. Its totient is φ = 245124688.

The previous prime is 245124673. The next prime is 245124703. The reversal of 245124689 is 986421542.

245124689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 244140625 + 984064 = 15625^2 + 992^2 .

It is a cyclic number.

It is not a de Polignac number, because 245124689 - 2⁴ = 245124673 is a prime.

It is a super-2 number, since 2×245124689² = 120172226314693442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (245124389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122562344 + 122562345.

It is an arithmetic number, because the mean of its divisors is an integer number (122562345).

Almost surely, 2^245124689 is an apocalyptic number.

It is an amenable number.

245124689 is a deficient number, since it is larger than the sum of its proper divisors (1).

245124689 is an equidigital number, since it uses as much as digits as its factorization.

245124689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 138240, while the sum is 41.

The square root of 245124689 is about 15656.4583798508. The cubic root of 245124689 is about 625.8386088863.

The spelling of 245124689 in words is "two hundred forty-five million, one hundred twenty-four thousand, six hundred eighty-nine".