1065505051 has 4 divisors (see below), whose sum is σ = 1147466992. Its totient is φ = 983543112.

The previous prime is 1065505043. The next prime is 1065505093. The reversal of 1065505051 is 1505055601.

1065505051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 1065505051 - 2³ = 1065505043 is a prime.

It is a super-2 number, since 2×1065505051² = 2270602027413025202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1065505951) 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, 40980951 + ... + 40980976.

It is an arithmetic number, because the mean of its divisors is an integer number (286866748).

Almost surely, 2^1065505051 is an apocalyptic number.

1065505051 is a deficient number, since it is larger than the sum of its proper divisors (81961941).

1065505051 is an equidigital number, since it uses as much as digits as its factorization.

1065505051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81961940.

The product of its (nonzero) digits is 3750, while the sum is 28.

The square root of 1065505051 is about 32642.0748574597. The cubic root of 1065505051 is about 1021.3748763709.

The spelling of 1065505051 in words is "one billion, sixty-five million, five hundred five thousand, fifty-one".