245380871 has 4 divisors (see below), whose sum is σ = 246462072. Its totient is φ = 244299672.

The previous prime is 245380789. The next prime is 245380879. The reversal of 245380871 is 178083542.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 245380871 - 2²² = 241186567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245380879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 540260 + ... + 540713.

It is an arithmetic number, because the mean of its divisors is an integer number (61615518).

Almost surely, 2^245380871 is an apocalyptic number.

245380871 is a deficient number, since it is larger than the sum of its proper divisors (1081201).

245380871 is a wasteful number, since it uses less digits than its factorization.

245380871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081200.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 245380871 is about 15664.6375955526. The cubic root of 245380871 is about 626.0565561494.

The spelling of 245380871 in words is "two hundred forty-five million, three hundred eighty thousand, eight hundred seventy-one".