245171149 has 2 divisors, whose sum is σ = 245171150. Its totient is φ = 245171148.

The previous prime is 245171083. The next prime is 245171153. The reversal of 245171149 is 941171542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 234641124 + 10530025 = 15318^2 + 3245^2 .

It is a cyclic number.

It is not a de Polignac number, because 245171149 - 2¹⁵ = 245138381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245111149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122585574 + 122585575.

It is an arithmetic number, because the mean of its divisors is an integer number (122585575).

Almost surely, 2^245171149 is an apocalyptic number.

It is an amenable number.

245171149 is a deficient number, since it is larger than the sum of its proper divisors (1).

245171149 is an equidigital number, since it uses as much as digits as its factorization.

245171149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 34.

The square root of 245171149 is about 15657.9420422992. The cubic root of 245171149 is about 625.8781460773.

The spelling of 245171149 in words is "two hundred forty-five million, one hundred seventy-one thousand, one hundred forty-nine".