245999993 has 2 divisors, whose sum is σ = 245999994. Its totient is φ = 245999992.

The previous prime is 245999981. The next prime is 246000059. The reversal of 245999993 is 399999542.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128754409 + 117245584 = 11347^2 + 10828^2 .

It is a cyclic number.

It is not a de Polignac number, because 245999993 - 2⁸ = 245999737 is a prime.

It is not a weakly prime, because it can be changed into another prime (245999903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122999996 + 122999997.

It is an arithmetic number, because the mean of its divisors is an integer number (122999997).

Almost surely, 2^245999993 is an apocalyptic number.

It is an amenable number.

245999993 is a deficient number, since it is larger than the sum of its proper divisors (1).

245999993 is an equidigital number, since it uses as much as digits as its factorization.

245999993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7085880, while the sum is 59.

The square root of 245999993 is about 15684.3869182063. The cubic root of 245999993 is about 626.5826496626.

The spelling of 245999993 in words is "two hundred forty-five million, nine hundred ninety-nine thousand, nine hundred ninety-three".