1263055 has 4 divisors (see below), whose sum is σ = 1515672. Its totient is φ = 1010440.

The previous prime is 1263047. The next prime is 1263071. The reversal of 1263055 is 5503621.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1263055 - 2³ = 1263047 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

1263055 is a lucky number.

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 3 ways as a sum of consecutive naturals, for example, 126301 + ... + 126310.

It is an arithmetic number, because the mean of its divisors is an integer number (378918).

2^1263055 is an apocalyptic number.

1263055 is a deficient number, since it is larger than the sum of its proper divisors (252617).

1263055 is an equidigital number, since it uses as much as digits as its factorization.

1263055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252616.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 1263055 is about 1123.8571973343. The cubic root of 1263055 is about 108.0954517363.

Adding to 1263055 its reverse (5503621), we get a palindrome (6766676).

The spelling of 1263055 in words is "one million, two hundred sixty-three thousand, fifty-five".