51058581 has 32 divisors (see below), whose sum is σ = 81174528. Its totient is φ = 27933120.

The previous prime is 51058573. The next prime is 51058583. The reversal of 51058581 is 18585015.

51058581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51058581 - 2³ = 51058573 is a prime.

It is a super-2 number, since 2×51058581² = 5213957387467122, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51058583) 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 31 ways as a sum of consecutive naturals, for example, 69291 + ... + 70023.

It is an arithmetic number, because the mean of its divisors is an integer number (2536704).

Almost surely, 2^51058581 is an apocalyptic number.

It is an amenable number.

51058581 is a deficient number, since it is larger than the sum of its proper divisors (30115947).

51058581 is a wasteful number, since it uses less digits than its factorization.

51058581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881.

The product of its (nonzero) digits is 8000, while the sum is 33.

The square root of 51058581 is about 7145.5287418077. The cubic root of 51058581 is about 370.9849118277.

The spelling of 51058581 in words is "fifty-one million, fifty-eight thousand, five hundred eighty-one".