245489471 has 4 divisors (see below), whose sum is σ = 245622000. Its totient is φ = 245356944.

The previous prime is 245489467. The next prime is 245489513. The reversal of 245489471 is 174984542.

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 245489471 - 2² = 245489467 is a prime.

It is a super-3 number, since 3×245489471³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245489441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63446 + ... + 67203.

It is an arithmetic number, because the mean of its divisors is an integer number (61405500).

Almost surely, 2^245489471 is an apocalyptic number.

245489471 is a deficient number, since it is larger than the sum of its proper divisors (132529).

245489471 is a wasteful number, since it uses less digits than its factorization.

245489471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132528.

The product of its digits is 322560, while the sum is 44.

The square root of 245489471 is about 15668.1036184983. The cubic root of 245489471 is about 626.1489019980.

The spelling of 245489471 in words is "two hundred forty-five million, four hundred eighty-nine thousand, four hundred seventy-one".