51791849 has 8 divisors (see below), whose sum is σ = 52253760. Its totient is φ = 51332400.

The previous prime is 51791833. The next prime is 51791881. The reversal of 51791849 is 94819715.

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

It is a cyclic number.

It is not a de Polignac number, because 51791849 - 2⁴ = 51791833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51791819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81764 + ... + 82394.

It is an arithmetic number, because the mean of its divisors is an integer number (6531720).

Almost surely, 2^51791849 is an apocalyptic number.

It is an amenable number.

51791849 is a deficient number, since it is larger than the sum of its proper divisors (461911).

51791849 is a wasteful number, since it uses less digits than its factorization.

51791849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1231.

The product of its digits is 90720, while the sum is 44.

The square root of 51791849 is about 7196.6554037275. The cubic root of 51791849 is about 372.7524202365.

The spelling of 51791849 in words is "fifty-one million, seven hundred ninety-one thousand, eight hundred forty-nine".