1275881 has 8 divisors (see below), whose sum is σ = 1313760. Its totient is φ = 1238688.

The previous prime is 1275877. The next prime is 1275889. The reversal of 1275881 is 1885721.

1275881 = 18² + 19² + ... + 156².

It is a happy number.

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 1275881 - 2² = 1275877 is a prime.

It is a super-2 number, since 2×1275881² = 3255744652322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1275889) 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, 9110 + ... + 9248.

It is an arithmetic number, because the mean of its divisors is an integer number (164220).

2^1275881 is an apocalyptic number.

It is an amenable number.

1275881 is a deficient number, since it is larger than the sum of its proper divisors (37879).

1275881 is a wasteful number, since it uses less digits than its factorization.

1275881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343.

The product of its digits is 4480, while the sum is 32.

The square root of 1275881 is about 1129.5490250538. The cubic root of 1275881 is about 108.4601140317.

The spelling of 1275881 in words is "one million, two hundred seventy-five thousand, eight hundred eighty-one".