1243552055 has 16 divisors (see below), whose sum is σ = 1549834560. Its totient is φ = 957065472.

The previous prime is 1243552049. The next prime is 1243552061. The reversal of 1243552055 is 5502553421.

It is an interprime number because it is at equal distance from previous prime (1243552049) and next prime (1243552061).

It is a cyclic number.

It is not a de Polignac number, because 1243552055 - 2¹² = 1243547959 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21299 + ... + 54228.

It is an arithmetic number, because the mean of its divisors is an integer number (96864660).

Almost surely, 2^1243552055 is an apocalyptic number.

1243552055 is a deficient number, since it is larger than the sum of its proper divisors (306282505).

1243552055 is an equidigital number, since it uses as much as digits as its factorization.

1243552055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75658.

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 1243552055 is about 35264.0334476928. The cubic root of 1243552055 is about 1075.3619275298.

The spelling of 1243552055 in words is "one billion, two hundred forty-three million, five hundred fifty-two thousand, fifty-five".