245404555 has 8 divisors (see below), whose sum is σ = 321256944. Its totient is φ = 178476000.

The previous prime is 245404553. The next prime is 245404567. The reversal of 245404555 is 555404542.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 245404555 - 2¹ = 245404553 is a prime.

It is a super-2 number, since 2×245404555² = 120446791229496050, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 245404555.

It is not an unprimeable number, because it can be changed into a prime (245404553) 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 7 ways as a sum of consecutive naturals, for example, 2230896 + ... + 2231005.

It is an arithmetic number, because the mean of its divisors is an integer number (40157118).

Almost surely, 2^245404555 is an apocalyptic number.

245404555 is a deficient number, since it is larger than the sum of its proper divisors (75852389).

245404555 is a wasteful number, since it uses less digits than its factorization.

245404555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4461917.

The product of its (nonzero) digits is 80000, while the sum is 34.

The square root of 245404555 is about 15665.3935475621. The cubic root of 245404555 is about 626.0766976902.

The spelling of 245404555 in words is "two hundred forty-five million, four hundred four thousand, five hundred fifty-five".