245124013 has 2 divisors, whose sum is σ = 245124014. Its totient is φ = 245124012.

The previous prime is 245123987. The next prime is 245124017. The reversal of 245124013 is 310421542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 240467049 + 4656964 = 15507^2 + 2158^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245124013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245124017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122562006 + 122562007.

It is an arithmetic number, because the mean of its divisors is an integer number (122562007).

Almost surely, 2^245124013 is an apocalyptic number.

It is an amenable number.

245124013 is a deficient number, since it is larger than the sum of its proper divisors (1).

245124013 is an equidigital number, since it uses as much as digits as its factorization.

245124013 is an evil number, because the sum of its binary digits is even.

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

The square root of 245124013 is about 15656.4367913009. The cubic root of 245124013 is about 625.8380335773.

Adding to 245124013 its reverse (310421542), we get a palindrome (555545555).

The spelling of 245124013 in words is "two hundred forty-five million, one hundred twenty-four thousand, thirteen".