51541857 has 6 divisors (see below), whose sum is σ = 74449362. Its totient is φ = 34361232.

The previous prime is 51541829. The next prime is 51541877. The reversal of 51541857 is 75814515.

51541857 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 only one way, i.e., 50637456 + 904401 = 7116^2 + 951^2 .

It is not a de Polignac number, because 51541857 - 2⁸ = 51541601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51541877) 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 5 ways as a sum of consecutive naturals, for example, 2863428 + ... + 2863445.

It is an arithmetic number, because the mean of its divisors is an integer number (12408227).

Almost surely, 2^51541857 is an apocalyptic number.

It is an amenable number.

51541857 is a deficient number, since it is larger than the sum of its proper divisors (22907505).

51541857 is a wasteful number, since it uses less digits than its factorization.

51541857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5726879 (or 5726876 counting only the distinct ones).

The product of its digits is 28000, while the sum is 36.

The square root of 51541857 is about 7179.2657702581. The cubic root of 51541857 is about 372.1517114460.

The spelling of 51541857 in words is "fifty-one million, five hundred forty-one thousand, eight hundred fifty-seven".