1261055 has 8 divisors (see below), whose sum is σ = 1522800. Its totient is φ = 1002496.

The previous prime is 1261033. The next prime is 1261069. The reversal of 1261055 is 5501621.

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 1261055 - 2⁶ = 1260991 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191 + ... + 1599.

It is an arithmetic number, because the mean of its divisors is an integer number (190350).

2^1261055 is an apocalyptic number.

1261055 is a deficient number, since it is larger than the sum of its proper divisors (261745).

1261055 is a wasteful number, since it uses less digits than its factorization.

1261055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1593.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1261055 is about 1122.9670520545. The cubic root of 1261055 is about 108.0383665700.

Adding to 1261055 its reverse (5501621), we get a palindrome (6762676).

The spelling of 1261055 in words is "one million, two hundred sixty-one thousand, fifty-five".