1254161 has 2 divisors, whose sum is σ = 1254162. Its totient is φ = 1254160.

The previous prime is 1254157. The next prime is 1254179. The reversal of 1254161 is 1614521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 844561 + 409600 = 919^2 + 640^2 .

It is a cyclic number.

It is not a de Polignac number, because 1254161 - 2² = 1254157 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1254131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 627080 + 627081.

It is an arithmetic number, because the mean of its divisors is an integer number (627081).

2^1254161 is an apocalyptic number.

It is an amenable number.

1254161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1254161 is an equidigital number, since it uses as much as digits as its factorization.

1254161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 240, while the sum is 20.

The square root of 1254161 is about 1119.8932984887. The cubic root of 1254161 is about 107.8411301546.

Adding to 1254161 its reverse (1614521), we get a palindrome (2868682).

The spelling of 1254161 in words is "one million, two hundred fifty-four thousand, one hundred sixty-one".