51001065 has 12 divisors (see below), whose sum is σ = 88401924. Its totient is φ = 27200544.

The previous prime is 51001043. The next prime is 51001109. The reversal of 51001065 is 56010015.

51001065 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 22581504 + 28419561 = 4752^2 + 5331^2 .

It is not a de Polignac number, because 51001065 - 2⁶ = 51001001 is a prime.

It is a super-2 number, since 2×51001065² = 5202217262268450, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 566634 + ... + 566723.

It is an arithmetic number, because the mean of its divisors is an integer number (7366827).

Almost surely, 2^51001065 is an apocalyptic number.

It is an amenable number.

51001065 is a deficient number, since it is larger than the sum of its proper divisors (37400859).

51001065 is a wasteful number, since it uses less digits than its factorization.

51001065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1133368 (or 1133365 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 51001065 is about 7141.5029930681. The cubic root of 51001065 is about 370.8455582666.

The spelling of 51001065 in words is "fifty-one million, one thousand, sixty-five".