245262739 has 2 divisors, whose sum is σ = 245262740. Its totient is φ = 245262738.

The previous prime is 245262737. The next prime is 245262749. The reversal of 245262739 is 937262542.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 245262739 - 2¹ = 245262737 is a prime.

It is a super-2 number, since 2×245262739² = 120307622283564242, which contains 22 as substring.

Together with 245262737, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (245262733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122631369 + 122631370.

It is an arithmetic number, because the mean of its divisors is an integer number (122631370).

Almost surely, 2^245262739 is an apocalyptic number.

245262739 is a deficient number, since it is larger than the sum of its proper divisors (1).

245262739 is an equidigital number, since it uses as much as digits as its factorization.

245262739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 40.

The square root of 245262739 is about 15660.8664830526. The cubic root of 245262739 is about 625.9560740102.

The spelling of 245262739 in words is "two hundred forty-five million, two hundred sixty-two thousand, seven hundred thirty-nine".