1005505049 has 2 divisors, whose sum is σ = 1005505050. Its totient is φ = 1005505048.

The previous prime is 1005505043. The next prime is 1005505063. The reversal of 1005505049 is 9405055001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 755865049 + 249640000 = 27493^2 + 15800^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1005505049 is a prime.

It is a super-2 number, since 2×1005505049² = 2022080807128984802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1005505043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502752524 + 502752525.

It is an arithmetic number, because the mean of its divisors is an integer number (502752525).

Almost surely, 2^1005505049 is an apocalyptic number.

It is an amenable number.

1005505049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1005505049 is an equidigital number, since it uses as much as digits as its factorization.

1005505049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 1005505049 is about 31709.6996043797. The cubic root of 1005505049 is about 1001.8316593091.

The spelling of 1005505049 in words is "one billion, five million, five hundred five thousand, forty-nine".