1226652545 has 4 divisors (see below), whose sum is σ = 1471983060. Its totient is φ = 981322032.

The previous prime is 1226652541. The next prime is 1226652571. The reversal of 1226652545 is 5452566221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5452566221 = 89 ⋅61264789.

It can be written as a sum of positive squares in 2 ways, for example, as 890186896 + 336465649 = 29836^2 + 18343^2 .

It is a cyclic number.

It is not a de Polignac number, because 1226652545 - 2² = 1226652541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1226652499 and 1226652508.

It is not an unprimeable number, because it can be changed into a prime (1226652541) 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, 122665250 + ... + 122665259.

It is an arithmetic number, because the mean of its divisors is an integer number (367995765).

Almost surely, 2^1226652545 is an apocalyptic number.

It is an amenable number.

1226652545 is a deficient number, since it is larger than the sum of its proper divisors (245330515).

1226652545 is an equidigital number, since it uses as much as digits as its factorization.

1226652545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245330514.

The product of its digits is 144000, while the sum is 38.

The square root of 1226652545 is about 35023.5998292580. The cubic root of 1226652545 is about 1070.4684078971.

The spelling of 1226652545 in words is "one billion, two hundred twenty-six million, six hundred fifty-two thousand, five hundred forty-five".