245243099 has 4 divisors (see below), whose sum is σ = 251224680. Its totient is φ = 239261520.

The previous prime is 245243083. The next prime is 245243101. The reversal of 245243099 is 990342542.

It is a happy number.

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 245243099 - 2⁴ = 245243083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245243599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2990729 + ... + 2990810.

It is an arithmetic number, because the mean of its divisors is an integer number (62806170).

Almost surely, 2^245243099 is an apocalyptic number.

245243099 is a deficient number, since it is larger than the sum of its proper divisors (5981581).

245243099 is an equidigital number, since it uses as much as digits as its factorization.

245243099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5981580.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 245243099 is about 15660.2394298427. The cubic root of 245243099 is about 625.9393652547.

The spelling of 245243099 in words is "two hundred forty-five million, two hundred forty-three thousand, ninety-nine".