1351249 has 2 divisors, whose sum is σ = 1351250. Its totient is φ = 1351248.

The previous prime is 1351247. The next prime is 1351253. The reversal of 1351249 is 9421531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1065024 + 286225 = 1032^2 + 535^2 .

It is a cyclic number.

It is not a de Polignac number, because 1351249 - 2¹ = 1351247 is a prime.

Together with 1351247, it forms a pair of twin primes.

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, 675624 + 675625.

It is an arithmetic number, because the mean of its divisors is an integer number (675625).

2^1351249 is an apocalyptic number.

It is an amenable number.

1351249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1351249 is an equidigital number, since it uses as much as digits as its factorization.

1351249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 25.

The square root of 1351249 is about 1162.4323636238. The cubic root of 1351249 is about 110.5550185669. Note that the first 3 decimals are identical.

It can be divided in two parts, 1351 and 249, that added together give a square (1600 = 40²).

The spelling of 1351249 in words is "one million, three hundred fifty-one thousand, two hundred forty-nine".