245498563 has 4 divisors (see below), whose sum is σ = 258419560. Its totient is φ = 232577568.

The previous prime is 245498557. The next prime is 245498623. The reversal of 245498563 is 365894542.

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 245498563 - 2¹⁷ = 245367491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245498503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6460470 + ... + 6460507.

It is an arithmetic number, because the mean of its divisors is an integer number (64604890).

Almost surely, 2^245498563 is an apocalyptic number.

245498563 is a deficient number, since it is larger than the sum of its proper divisors (12920997).

245498563 is a wasteful number, since it uses less digits than its factorization.

245498563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12920996.

The product of its digits is 1036800, while the sum is 46.

The square root of 245498563 is about 15668.3937594126. The cubic root of 245498563 is about 626.1566319636.

The spelling of 245498563 in words is "two hundred forty-five million, four hundred ninety-eight thousand, five hundred sixty-three".