10278397 has 2 divisors, whose sum is σ = 10278398. Its totient is φ = 10278396.

The previous prime is 10278379. The next prime is 10278431. The reversal of 10278397 is 79387201.

Together with previous prime (10278379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7650756 + 2627641 = 2766^2 + 1621^2 .

It is a cyclic number.

It is not a de Polignac number, because 10278397 - 2¹¹ = 10276349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10278337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5139198 + 5139199.

It is an arithmetic number, because the mean of its divisors is an integer number (5139199).

Almost surely, 2^10278397 is an apocalyptic number.

It is an amenable number.

10278397 is a deficient number, since it is larger than the sum of its proper divisors (1).

10278397 is an equidigital number, since it uses as much as digits as its factorization.

10278397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 37.

The square root of 10278397 is about 3205.9939176486. The cubic root of 10278397 is about 217.4244913386.

The spelling of 10278397 in words is "ten million, two hundred seventy-eight thousand, three hundred ninety-seven".