1226561752 has 16 divisors (see below), whose sum is σ = 2476711440. Its totient is φ = 566105376.

The previous prime is 1226561737. The next prime is 1226561753. The reversal of 1226561752 is 2571656221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226561753) 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, 5896828 + ... + 5897035.

It is an arithmetic number, because the mean of its divisors is an integer number (154794465).

Almost surely, 2^1226561752 is an apocalyptic number.

It is an amenable number.

1226561752 is an abundant number, since it is smaller than the sum of its proper divisors (1250149688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1226561752 is a wasteful number, since it uses less digits than its factorization.

1226561752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11793882 (or 11793878 counting only the distinct ones).

The product of its digits is 50400, while the sum is 37.

The square root of 1226561752 is about 35022.3036363972. The cubic root of 1226561752 is about 1070.4419963332.

The spelling of 1226561752 in words is "one billion, two hundred twenty-six million, five hundred sixty-one thousand, seven hundred fifty-two".