245353481 has 2 divisors, whose sum is σ = 245353482. Its totient is φ = 245353480.

The previous prime is 245353429. The next prime is 245353523. The reversal of 245353481 is 184353542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 239971081 + 5382400 = 15491^2 + 2320^2 .

It is a cyclic number.

It is not a de Polignac number, because 245353481 - 2¹⁸ = 245091337 is a prime.

It is a super-2 number, since 2×245353481² = 120396661277634722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (245353081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122676740 + 122676741.

It is an arithmetic number, because the mean of its divisors is an integer number (122676741).

Almost surely, 2^245353481 is an apocalyptic number.

It is an amenable number.

245353481 is a deficient number, since it is larger than the sum of its proper divisors (1).

245353481 is an equidigital number, since it uses as much as digits as its factorization.

245353481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57600, while the sum is 35.

The square root of 245353481 is about 15663.7633089880. The cubic root of 245353481 is about 626.0332613057.

The spelling of 245353481 in words is "two hundred forty-five million, three hundred fifty-three thousand, four hundred eighty-one".