1226553263 has 8 divisors (see below), whose sum is σ = 1334522448. Its totient is φ = 1120529664.

The previous prime is 1226553259. The next prime is 1226553271. The reversal of 1226553263 is 3623556221.

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 1226553263 - 2² = 1226553259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226553563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485081 + ... + 487602.

It is an arithmetic number, because the mean of its divisors is an integer number (166815306).

Almost surely, 2^1226553263 is an apocalyptic number.

1226553263 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1226553263 is a deficient number, since it is larger than the sum of its proper divisors (107969185).

1226553263 is an equidigital number, since it uses as much as digits as its factorization.

1226553263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972793.

The product of its digits is 64800, while the sum is 35.

The square root of 1226553263 is about 35022.1824419895. The cubic root of 1226553263 is about 1070.4395268277.

The spelling of 1226553263 in words is "one billion, two hundred twenty-six million, five hundred fifty-three thousand, two hundred sixty-three".