1281526 has 8 divisors (see below), whose sum is σ = 1941264. Its totient is φ = 634440.

The previous prime is 1281523. The next prime is 1281541. The reversal of 1281526 is 6251821.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1281526.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1281521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2905 + ... + 3316.

It is an arithmetic number, because the mean of its divisors is an integer number (242658).

2^1281526 is an apocalyptic number.

1281526 is a deficient number, since it is larger than the sum of its proper divisors (659738).

1281526 is a wasteful number, since it uses less digits than its factorization.

1281526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6326.

The product of its digits is 960, while the sum is 25.

The square root of 1281526 is about 1132.0450521070. The cubic root of 1281526 is about 108.6198354584.

The spelling of 1281526 in words is "one million, two hundred eighty-one thousand, five hundred twenty-six".