1356247 has 2 divisors, whose sum is σ = 1356248. Its totient is φ = 1356246.

The previous prime is 1356227. The next prime is 1356253. The reversal of 1356247 is 7426531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1356247 - 2¹⁵ = 1323479 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1356227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 678123 + 678124.

It is an arithmetic number, because the mean of its divisors is an integer number (678124).

2^1356247 is an apocalyptic number.

1356247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1356247 is an equidigital number, since it uses as much as digits as its factorization.

1356247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5040, while the sum is 28.

The square root of 1356247 is about 1164.5801818681. The cubic root of 1356247 is about 110.6911578269.

The spelling of 1356247 in words is "one million, three hundred fifty-six thousand, two hundred forty-seven".