1455240641 has 2 divisors, whose sum is σ = 1455240642. Its totient is φ = 1455240640.

The previous prime is 1455240607. The next prime is 1455240643. The reversal of 1455240641 is 1460425541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1387935025 + 67305616 = 37255^2 + 8204^2 .

It is an emirp because it is prime and its reverse (1460425541) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1455240641 is a prime.

Together with 1455240643, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1455240598 and 1455240607.

It is not a weakly prime, because it can be changed into another prime (1455240643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 727620320 + 727620321.

It is an arithmetic number, because the mean of its divisors is an integer number (727620321).

Almost surely, 2^1455240641 is an apocalyptic number.

It is an amenable number.

1455240641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1455240641 is an equidigital number, since it uses as much as digits as its factorization.

1455240641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 1455240641 is about 38147.6164524076. The cubic root of 1455240641 is about 1133.2131486068.

The spelling of 1455240641 in words is "one billion, four hundred fifty-five million, two hundred forty thousand, six hundred forty-one".