245405233 has 4 divisors (see below), whose sum is σ = 246179700. Its totient is φ = 244630768.

The previous prime is 245405191. The next prime is 245405327. The reversal of 245405233 is 332504542.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6640929 + 238764304 = 2577^2 + 15452^2 .

It is a cyclic number.

It is not a de Polignac number, because 245405233 - 2²⁵ = 211850801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245405333) 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, 386758 + ... + 387391.

It is an arithmetic number, because the mean of its divisors is an integer number (61544925).

Almost surely, 2^245405233 is an apocalyptic number.

It is an amenable number.

245405233 is a deficient number, since it is larger than the sum of its proper divisors (774467).

245405233 is an equidigital number, since it uses as much as digits as its factorization.

245405233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774466.

The product of its (nonzero) digits is 14400, while the sum is 28.

The square root of 245405233 is about 15665.4151876036. The cubic root of 245405233 is about 626.0772742614.

Adding to 245405233 its reverse (332504542), we get a palindrome (577909775).

The spelling of 245405233 in words is "two hundred forty-five million, four hundred five thousand, two hundred thirty-three".