1253261 has 2 divisors, whose sum is σ = 1253262. Its totient is φ = 1253260.

The previous prime is 1253251. The next prime is 1253279. The reversal of 1253261 is 1623521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 988036 + 265225 = 994^2 + 515^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1253261 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1253251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 626630 + 626631.

It is an arithmetic number, because the mean of its divisors is an integer number (626631).

2^1253261 is an apocalyptic number.

It is an amenable number.

1253261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1253261 is an equidigital number, since it uses as much as digits as its factorization.

1253261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 360, while the sum is 20.

The square root of 1253261 is about 1119.4914023788. The cubic root of 1253261 is about 107.8153279802.

Adding to 1253261 its reverse (1623521), we get a palindrome (2876782).

The spelling of 1253261 in words is "one million, two hundred fifty-three thousand, two hundred sixty-one".