245202171 has 16 divisors (see below), whose sum is σ = 334264320. Its totient is φ = 159834080.

The previous prime is 245202143. The next prime is 245202173. The reversal of 245202171 is 171202542.

It is a cyclic number.

It is not a de Polignac number, because 245202171 - 2⁶ = 245202107 is a prime.

It is a super-2 number, since 2×245202171² = 120248209326226482, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (245202173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30181 + ... + 37433.

It is an arithmetic number, because the mean of its divisors is an integer number (20891520).

Almost surely, 2^245202171 is an apocalyptic number.

245202171 is a deficient number, since it is larger than the sum of its proper divisors (89062149).

245202171 is a wasteful number, since it uses less digits than its factorization.

245202171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7506.

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 245202171 is about 15658.9326264596. The cubic root of 245202171 is about 625.9045428387.

The spelling of 245202171 in words is "two hundred forty-five million, two hundred two thousand, one hundred seventy-one".