1005505057 has 4 divisors (see below), whose sum is σ = 1037940736. Its totient is φ = 973069380.

The previous prime is 1005505049. The next prime is 1005505063. The reversal of 1005505057 is 7505055001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7505055001 = 151 ⋅49702351.

It is a cyclic number.

It is not a de Polignac number, because 1005505057 - 2³ = 1005505049 is a prime.

It is a super-2 number, since 2×1005505057² = 2022080839305146498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1005505037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16217793 + ... + 16217854.

It is an arithmetic number, because the mean of its divisors is an integer number (259485184).

Almost surely, 2^1005505057 is an apocalyptic number.

It is an amenable number.

1005505057 is a deficient number, since it is larger than the sum of its proper divisors (32435679).

1005505057 is an equidigital number, since it uses as much as digits as its factorization.

1005505057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32435678.

The product of its (nonzero) digits is 4375, while the sum is 28.

The square root of 1005505057 is about 31709.6997305241. The cubic root of 1005505057 is about 1001.8316619660.

The spelling of 1005505057 in words is "one billion, five million, five hundred five thousand, fifty-seven".