1351247 has 2 divisors, whose sum is σ = 1351248. Its totient is φ = 1351246.

The previous prime is 1351243. The next prime is 1351249. The reversal of 1351247 is 7421531.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1351247 - 2² = 1351243 is a prime.

Together with 1351249, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1351241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675623 + 675624.

It is an arithmetic number, because the mean of its divisors is an integer number (675624).

2^1351247 is an apocalyptic number.

1351247 is a deficient number, since it is larger than the sum of its proper divisors (1).

1351247 is an equidigital number, since it uses as much as digits as its factorization.

1351247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 840, while the sum is 23.

The square root of 1351247 is about 1162.4315033584. The cubic root of 1351247 is about 110.5549640222.

Adding to 1351247 its reverse (7421531), we get a palindrome (8772778).

The spelling of 1351247 in words is "one million, three hundred fifty-one thousand, two hundred forty-seven".