245440005 has 32 divisors (see below), whose sum is σ = 414998400. Its totient is φ = 123524352.

The previous prime is 245439991. The next prime is 245440007. The reversal of 245440005 is 500044542.

It is not a de Polignac number, because 245440005 - 2¹⁰ = 245438981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245440007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77391 + ... + 80499.

It is an arithmetic number, because the mean of its divisors is an integer number (12968700).

Almost surely, 2^245440005 is an apocalyptic number.

It is an amenable number.

245440005 is a deficient number, since it is larger than the sum of its proper divisors (169558395).

245440005 is a wasteful number, since it uses less digits than its factorization.

245440005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3413.

The product of its (nonzero) digits is 3200, while the sum is 24.

The square root of 245440005 is about 15666.5249816288. The cubic root of 245440005 is about 626.1068429475.

Adding to 245440005 its reverse (500044542), we get a palindrome (745484547).

The spelling of 245440005 in words is "two hundred forty-five million, four hundred forty thousand, five".