1275541 has 2 divisors, whose sum is σ = 1275542. Its totient is φ = 1275540.

The previous prime is 1275539. The next prime is 1275553. The reversal of 1275541 is 1455721.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1274641 + 900 = 1129^2 + 30^2 .

It is an emirp because it is prime and its reverse (1455721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1275541 - 2¹ = 1275539 is a prime.

Together with 1275539, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1275041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 637770 + 637771.

It is an arithmetic number, because the mean of its divisors is an integer number (637771).

2^1275541 is an apocalyptic number.

It is an amenable number.

1275541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1275541 is an equidigital number, since it uses as much as digits as its factorization.

1275541 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1400, while the sum is 25.

The square root of 1275541 is about 1129.3985124835. The cubic root of 1275541 is about 108.4504789338.

The spelling of 1275541 in words is "one million, two hundred seventy-five thousand, five hundred forty-one".