1275530 has 16 divisors (see below), whose sum is σ = 2310120. Its totient is φ = 507072.

The previous prime is 1275523. The next prime is 1275539. The reversal of 1275530 is 355721.

It can be written as a sum of positive squares in 4 ways, for example, as 1038361 + 237169 = 1019^2 + 487^2 .

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1275496 and 1275505.

It is not an unprimeable number, because it can be changed into a prime (1275539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2012 + ... + 2568.

2^1275530 is an apocalyptic number.

1275530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1275530 is a deficient number, since it is larger than the sum of its proper divisors (1034590).

1275530 is a wasteful number, since it uses less digits than its factorization.

1275530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793.

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 1275530 is about 1129.3936426242. The cubic root of 1275530 is about 108.4501671815.

The spelling of 1275530 in words is "one million, two hundred seventy-five thousand, five hundred thirty".