245399305 has 16 divisors (see below), whose sum is σ = 317882880. Its totient is φ = 181306048.

The previous prime is 245399293. The next prime is 245399327. The reversal of 245399305 is 503993542.

245399305 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 245399305 - 2⁷ = 245399177 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33457 + ... + 40126.

It is an arithmetic number, because the mean of its divisors is an integer number (19867680).

Almost surely, 2^245399305 is an apocalyptic number.

It is an amenable number.

245399305 is a deficient number, since it is larger than the sum of its proper divisors (72483575).

245399305 is a wasteful number, since it uses less digits than its factorization.

245399305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73640.

The product of its (nonzero) digits is 145800, while the sum is 40.

The square root of 245399305 is about 15665.2259798574. The cubic root of 245399305 is about 626.0722330541.

The spelling of 245399305 in words is "two hundred forty-five million, three hundred ninety-nine thousand, three hundred five".