245824039 has 4 divisors (see below), whose sum is σ = 254300760. Its totient is φ = 237347320.

The previous prime is 245824037. The next prime is 245824057. The reversal of 245824039 is 930428542.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 930428542 = 2 ⋅465214271.

It is a cyclic number.

It is not a de Polignac number, because 245824039 - 2¹ = 245824037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245823989 and 245824007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245824037) 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, 4238317 + ... + 4238374.

It is an arithmetic number, because the mean of its divisors is an integer number (63575190).

Almost surely, 2^245824039 is an apocalyptic number.

245824039 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

245824039 is a deficient number, since it is larger than the sum of its proper divisors (8476721).

245824039 is an equidigital number, since it uses as much as digits as its factorization.

245824039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8476720.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 245824039 is about 15678.7767061082. The cubic root of 245824039 is about 626.4332241574.

The spelling of 245824039 in words is "two hundred forty-five million, eight hundred twenty-four thousand, thirty-nine".