51511041 has 12 divisors (see below), whose sum is σ = 74949732. Its totient is φ = 34089216.

The previous prime is 51511039. The next prime is 51511043. The reversal of 51511041 is 14011515.

It is a happy number.

51511041 is a `hidden beast` number, since 515 + 110 + 41 = 666.

51511041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (51511039) and next prime (51511043).

It can be written as a sum of positive squares in 2 ways, for example, as 25040016 + 26471025 = 5004^2 + 5145^2 .

It is not a de Polignac number, because 51511041 - 2¹ = 51511039 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51511043) by changing a digit.

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, 19656 + ... + 22121.

It is an arithmetic number, because the mean of its divisors is an integer number (6245811).

Almost surely, 2^51511041 is an apocalyptic number.

It is an amenable number.

51511041 is a deficient number, since it is larger than the sum of its proper divisors (23438691).

51511041 is a wasteful number, since it uses less digits than its factorization.

51511041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41920 (or 41917 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The square root of 51511041 is about 7177.1192688989. The cubic root of 51511041 is about 372.0775289329.

Adding to 51511041 its reverse (14011515), we get a palindrome (65522556).

The spelling of 51511041 in words is "fifty-one million, five hundred eleven thousand, forty-one".