245140249 has 2 divisors, whose sum is σ = 245140250. Its totient is φ = 245140248.

The previous prime is 245140241. The next prime is 245140303. The reversal of 245140249 is 942041542.

245140249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 213014025 + 32126224 = 14595^2 + 5668^2 .

It is a cyclic number.

It is not a de Polignac number, because 245140249 - 2³ = 245140241 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 245140249.

It is not a weakly prime, because it can be changed into another prime (245140241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122570124 + 122570125.

It is an arithmetic number, because the mean of its divisors is an integer number (122570125).

Almost surely, 2^245140249 is an apocalyptic number.

It is an amenable number.

245140249 is a deficient number, since it is larger than the sum of its proper divisors (1).

245140249 is an equidigital number, since it uses as much as digits as its factorization.

245140249 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 245140249 is about 15656.9552914990. The cubic root of 245140249 is about 625.8518509126.

The spelling of 245140249 in words is "two hundred forty-five million, one hundred forty thousand, two hundred forty-nine".