245747313 has 24 divisors (see below), whose sum is σ = 410574528. Its totient is φ = 138732192.

The previous prime is 245747287. The next prime is 245747351. The reversal of 245747313 is 313747542.

245747313 is a `hidden beast` number, since 2 + 4 + 574 + 73 + 13 = 666.

It is not a de Polignac number, because 245747313 - 2¹⁰ = 245746289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (245747353) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18270 + ... + 28727.

It is an arithmetic number, because the mean of its divisors is an integer number (17107272).

Almost surely, 2^245747313 is an apocalyptic number.

It is an amenable number.

245747313 is a deficient number, since it is larger than the sum of its proper divisors (164827215).

245747313 is a wasteful number, since it uses less digits than its factorization.

245747313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47093 (or 47090 counting only the distinct ones).

The product of its digits is 70560, while the sum is 36.

The square root of 245747313 is about 15676.3297043664. The cubic root of 245747313 is about 626.3680437718.

It can be divided in two parts, 2457 and 47313, that added together give a triangular number (49770 = T₃₁₅).

The spelling of 245747313 in words is "two hundred forty-five million, seven hundred forty-seven thousand, three hundred thirteen".