245471887 has 4 divisors (see below), whose sum is σ = 258391480. Its totient is φ = 232552296.

The previous prime is 245471851. The next prime is 245471903. The reversal of 245471887 is 788174542.

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 245471887 - 2¹¹ = 245469839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245471287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6459768 + ... + 6459805.

It is an arithmetic number, because the mean of its divisors is an integer number (64597870).

Almost surely, 2^245471887 is an apocalyptic number.

245471887 is a deficient number, since it is larger than the sum of its proper divisors (12919593).

245471887 is a wasteful number, since it uses less digits than its factorization.

245471887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12919592.

The product of its digits is 501760, while the sum is 46.

The square root of 245471887 is about 15667.5424684282. The cubic root of 245471887 is about 626.1339516416.

The spelling of 245471887 in words is "two hundred forty-five million, four hundred seventy-one thousand, eight hundred eighty-seven".