51057717 has 4 divisors (see below), whose sum is σ = 68076960. Its totient is φ = 34038476.

The previous prime is 51057707. The next prime is 51057737. The reversal of 51057717 is 71775015.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51057717 - 2⁴ = 51057701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51057707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8509617 + ... + 8509622.

It is an arithmetic number, because the mean of its divisors is an integer number (17019240).

Almost surely, 2^51057717 is an apocalyptic number.

It is an amenable number.

51057717 is a deficient number, since it is larger than the sum of its proper divisors (17019243).

51057717 is a wasteful number, since it uses less digits than its factorization.

51057717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17019242.

The product of its (nonzero) digits is 8575, while the sum is 33.

The square root of 51057717 is about 7145.4682841644. The cubic root of 51057717 is about 370.9828192459.

The spelling of 51057717 in words is "fifty-one million, fifty-seven thousand, seven hundred seventeen".