245045139 has 8 divisors (see below), whose sum is σ = 326979840. Its totient is φ = 163236936.

The previous prime is 245045083. The next prime is 245045149. The reversal of 245045139 is 931540542.

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

It is not a de Polignac number, because 245045139 - 2¹¹ = 245043091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (245045149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27007 + ... + 34920.

It is an arithmetic number, because the mean of its divisors is an integer number (40872480).

Almost surely, 2^245045139 is an apocalyptic number.

245045139 is a deficient number, since it is larger than the sum of its proper divisors (81934701).

245045139 is a wasteful number, since it uses less digits than its factorization.

245045139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63249.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 245045139 is about 15653.9176885532. The cubic root of 245045139 is about 625.7709006951.

The spelling of 245045139 in words is "two hundred forty-five million, forty-five thousand, one hundred thirty-nine".