51744857 has 4 divisors (see below), whose sum is σ = 51766656. Its totient is φ = 51723060.

The previous prime is 51744853. The next prime is 51744863. The reversal of 51744857 is 75844715.

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 51744857 - 2² = 51744853 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51744853) 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, 6833 + ... + 12254.

It is an arithmetic number, because the mean of its divisors is an integer number (12941664).

Almost surely, 2^51744857 is an apocalyptic number.

It is an amenable number.

51744857 is a deficient number, since it is larger than the sum of its proper divisors (21799).

51744857 is a wasteful number, since it uses less digits than its factorization.

51744857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21798.

The product of its digits is 156800, while the sum is 41.

The square root of 51744857 is about 7193.3898128768. The cubic root of 51744857 is about 372.6396503546.

The spelling of 51744857 in words is "fifty-one million, seven hundred forty-four thousand, eight hundred fifty-seven".