1226469551 has 4 divisors (see below), whose sum is σ = 1291020600. Its totient is φ = 1161918504.

The previous prime is 1226469533. The next prime is 1226469557. The reversal of 1226469551 is 1559646221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1559646221 = 7 ⋅222806603.

It is a cyclic number.

It is not a de Polignac number, because 1226469551 - 2¹⁰ = 1226468527 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1226469499 and 1226469508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226469557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32275496 + ... + 32275533.

It is an arithmetic number, because the mean of its divisors is an integer number (322755150).

Almost surely, 2^1226469551 is an apocalyptic number.

1226469551 is a deficient number, since it is larger than the sum of its proper divisors (64551049).

1226469551 is an equidigital number, since it uses as much as digits as its factorization.

1226469551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64551048.

The product of its digits is 129600, while the sum is 41.

The square root of 1226469551 is about 35020.9872933360. The cubic root of 1226469551 is about 1070.4151738501.

The spelling of 1226469551 in words is "one billion, two hundred twenty-six million, four hundred sixty-nine thousand, five hundred fifty-one".