245345741 has 2 divisors, whose sum is σ = 245345742. Its totient is φ = 245345740.

The previous prime is 245345729. The next prime is 245345743. The reversal of 245345741 is 147543542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 242269225 + 3076516 = 15565^2 + 1754^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245345741 is a prime.

It is a Sophie Germain prime.

Together with 245345743, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245345743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122672870 + 122672871.

It is an arithmetic number, because the mean of its divisors is an integer number (122672871).

Almost surely, 2^245345741 is an apocalyptic number.

It is an amenable number.

245345741 is a deficient number, since it is larger than the sum of its proper divisors (1).

245345741 is an equidigital number, since it uses as much as digits as its factorization.

245345741 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67200, while the sum is 35.

The square root of 245345741 is about 15663.5162399763. The cubic root of 245345741 is about 626.0266782208.

The spelling of 245345741 in words is "two hundred forty-five million, three hundred forty-five thousand, seven hundred forty-one".