1356456247 has 2 divisors, whose sum is σ = 1356456248. Its totient is φ = 1356456246.

The previous prime is 1356456191. The next prime is 1356456263. The reversal of 1356456247 is 7426546531.

It is a strong prime.

It is an emirp because it is prime and its reverse (7426546531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1356456247 - 2¹¹ = 1356454199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1356456287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 678228123 + 678228124.

It is an arithmetic number, because the mean of its divisors is an integer number (678228124).

Almost surely, 2^1356456247 is an apocalyptic number.

1356456247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1356456247 is an equidigital number, since it uses as much as digits as its factorization.

1356456247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 604800, while the sum is 43.

The square root of 1356456247 is about 36830.0997419230. The cubic root of 1356456247 is about 1106.9685015329.

The spelling of 1356456247 in words is "one billion, three hundred fifty-six million, four hundred fifty-six thousand, two hundred forty-seven".