245101481 has 2 divisors, whose sum is σ = 245101482. Its totient is φ = 245101480.

The previous prime is 245101459. The next prime is 245101499. The reversal of 245101481 is 184101542.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 190578025 + 54523456 = 13805^2 + 7384^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245101481 is a prime.

It is a super-2 number, since 2×245101481² = 120149471976786722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 245101481.

It is not a weakly prime, because it can be changed into another prime (245101411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122550740 + 122550741.

It is an arithmetic number, because the mean of its divisors is an integer number (122550741).

Almost surely, 2^245101481 is an apocalyptic number.

It is an amenable number.

245101481 is a deficient number, since it is larger than the sum of its proper divisors (1).

245101481 is an equidigital number, since it uses as much as digits as its factorization.

245101481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 245101481 is about 15655.7171985189. The cubic root of 245101481 is about 625.8188571416.

The spelling of 245101481 in words is "two hundred forty-five million, one hundred one thousand, four hundred eighty-one".