1275545 has 8 divisors (see below), whose sum is σ = 1537224. Its totient is φ = 1016064.

The previous prime is 1275541. The next prime is 1275553. The reversal of 1275545 is 5455721.

It can be written as a sum of positive squares in 4 ways, for example, as 85264 + 1190281 = 292^2 + 1091^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1275545 - 2² = 1275541 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1275541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1307 + ... + 2063.

It is an arithmetic number, because the mean of its divisors is an integer number (192153).

2^1275545 is an apocalyptic number.

It is an amenable number.

1275545 is a deficient number, since it is larger than the sum of its proper divisors (261679).

1275545 is an equidigital number, since it uses as much as digits as its factorization.

1275545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1099.

The product of its digits is 7000, while the sum is 29.

The square root of 1275545 is about 1129.4002833362. The cubic root of 1275545 is about 108.4505922979.

It can be divided in two parts, 12 and 75545, that added together give a palindrome (75557).

The spelling of 1275545 in words is "one million, two hundred seventy-five thousand, five hundred forty-five".