51051657 has 8 divisors (see below), whose sum is σ = 68367040. Its totient is φ = 33885360.

The previous prime is 51051653. The next prime is 51051677. The reversal of 51051657 is 75615015.

51051657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51051657 - 2² = 51051653 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51051653) 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 7 ways as a sum of consecutive naturals, for example, 36469 + ... + 37842.

It is an arithmetic number, because the mean of its divisors is an integer number (8545880).

Almost surely, 2^51051657 is an apocalyptic number.

It is an amenable number.

51051657 is a deficient number, since it is larger than the sum of its proper divisors (17315383).

51051657 is a wasteful number, since it uses less digits than its factorization.

51051657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74543.

The product of its (nonzero) digits is 5250, while the sum is 30.

The square root of 51051657 is about 7145.0442265951. The cubic root of 51051657 is about 370.9681414462.

The spelling of 51051657 in words is "fifty-one million, fifty-one thousand, six hundred fifty-seven".