245535979 has 4 divisors (see below), whose sum is σ = 264423376. Its totient is φ = 226648584.

The previous prime is 245535973. The next prime is 245536009. The reversal of 245535979 is 979535542.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 979535542 = 2 ⋅489767771.

It is a cyclic number.

It is not a de Polignac number, because 245535979 - 2⁹ = 245535467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245535973) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9443679 + ... + 9443704.

It is an arithmetic number, because the mean of its divisors is an integer number (66105844).

Almost surely, 2^245535979 is an apocalyptic number.

245535979 is a deficient number, since it is larger than the sum of its proper divisors (18887397).

245535979 is a wasteful number, since it uses less digits than its factorization.

245535979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18887396.

The product of its digits is 1701000, while the sum is 49.

The square root of 245535979 is about 15669.5877099559. The cubic root of 245535979 is about 626.1884408211.

The spelling of 245535979 in words is "two hundred forty-five million, five hundred thirty-five thousand, nine hundred seventy-nine".