1055055649 has 4 divisors (see below), whose sum is σ = 1117117764. Its totient is φ = 992993536.

The previous prime is 1055055647. The next prime is 1055055679. The reversal of 1055055649 is 9465505501.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 676364049 + 378691600 = 26007^2 + 19460^2 .

It is a cyclic number.

It is not a de Polignac number, because 1055055649 - 2¹ = 1055055647 is a prime.

It is a super-2 number, since 2×1055055649² = 2226284844973622402, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1055055647) 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, 31031032 + ... + 31031065.

It is an arithmetic number, because the mean of its divisors is an integer number (279279441).

Almost surely, 2^1055055649 is an apocalyptic number.

It is an amenable number.

1055055649 is a deficient number, since it is larger than the sum of its proper divisors (62062115).

1055055649 is an equidigital number, since it uses as much as digits as its factorization.

1055055649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62062114.

The product of its (nonzero) digits is 135000, while the sum is 40.

The square root of 1055055649 is about 32481.6201720296. The cubic root of 1055055649 is about 1018.0250292015.

The spelling of 1055055649 in words is "one billion, fifty-five million, fifty-five thousand, six hundred forty-nine".