378247577 has 2 divisors, whose sum is σ = 378247578. Its totient is φ = 378247576.

The previous prime is 378247553. The next prime is 378247579. The reversal of 378247577 is 775742873.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 329023321 + 49224256 = 18139^2 + 7016^2 .

It is a cyclic number.

It is not a de Polignac number, because 378247577 - 2⁸ = 378247321 is a prime.

Together with 378247579, 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 (378247579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189123788 + 189123789.

It is an arithmetic number, because the mean of its divisors is an integer number (189123789).

Almost surely, 2^378247577 is an apocalyptic number.

It is an amenable number.

378247577 is a deficient number, since it is larger than the sum of its proper divisors (1).

378247577 is an equidigital number, since it uses as much as digits as its factorization.

378247577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304960, while the sum is 50.

The square root of 378247577 is about 19448.5880464367. The cubic root of 378247577 is about 723.2005008311.

The spelling of 378247577 in words is "three hundred seventy-eight million, two hundred forty-seven thousand, five hundred seventy-seven".