245417971 has 2 divisors, whose sum is σ = 245417972. Its totient is φ = 245417970.

The previous prime is 245417957. The next prime is 245417987. The reversal of 245417971 is 179714542.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245417971 - 2¹⁹ = 244893683 is a prime.

It is not a weakly prime, because it can be changed into another prime (245417941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122708985 + 122708986.

It is an arithmetic number, because the mean of its divisors is an integer number (122708986).

Almost surely, 2^245417971 is an apocalyptic number.

245417971 is a deficient number, since it is larger than the sum of its proper divisors (1).

245417971 is an equidigital number, since it uses as much as digits as its factorization.

245417971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 40.

The square root of 245417971 is about 15665.8217467198. The cubic root of 245417971 is about 626.0881064596.

The spelling of 245417971 in words is "two hundred forty-five million, four hundred seventeen thousand, nine hundred seventy-one".