245451313 has 2 divisors, whose sum is σ = 245451314. Its totient is φ = 245451312.

The previous prime is 245451307. The next prime is 245451317. The reversal of 245451313 is 313154542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 207849889 + 37601424 = 14417^2 + 6132^2 .

It is a cyclic number.

It is not a de Polignac number, because 245451313 - 2²¹ = 243354161 is a prime.

It is not a weakly prime, because it can be changed into another prime (245451317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122725656 + 122725657.

It is an arithmetic number, because the mean of its divisors is an integer number (122725657).

Almost surely, 2^245451313 is an apocalyptic number.

It is an amenable number.

245451313 is a deficient number, since it is larger than the sum of its proper divisors (1).

245451313 is an equidigital number, since it uses as much as digits as its factorization.

245451313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 28.

The square root of 245451313 is about 15666.8858743530. The cubic root of 245451313 is about 626.1164582062.

The spelling of 245451313 in words is "two hundred forty-five million, four hundred fifty-one thousand, three hundred thirteen".