245556789 has 16 divisors (see below), whose sum is σ = 354733632. Its totient is φ = 150490368.

The previous prime is 245556767. The next prime is 245556793. The reversal of 245556789 is 987655542.

It is not a de Polignac number, because 245556789 - 2²¹ = 243459637 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245556799) 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, 53794 + ... + 58179.

It is an arithmetic number, because the mean of its divisors is an integer number (22170852).

Almost surely, 2^245556789 is an apocalyptic number.

It is an amenable number.

245556789 is a deficient number, since it is larger than the sum of its proper divisors (109176843).

245556789 is a wasteful number, since it uses less digits than its factorization.

245556789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112036.

The product of its digits is 3024000, while the sum is 51.

The square root of 245556789 is about 15670.2517210158. The cubic root of 245556789 is about 626.2061308468.

The spelling of 245556789 in words is "two hundred forty-five million, five hundred fifty-six thousand, seven hundred eighty-nine".