51049 has 4 divisors (see below), whose sum is σ = 51840. Its totient is φ = 50260.

The previous prime is 51047. The next prime is 51059. The reversal of 51049 is 94015.

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, and also an emirpimes, since its reverse is a distinct semiprime: 94015 = 5 ⋅18803.

It is a cyclic number.

It is not a de Polignac number, because 51049 - 2¹ = 51047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 289 + ... + 430.

It is an arithmetic number, because the mean of its divisors is an integer number (12960).

2⁵¹⁰⁴⁹ is an apocalyptic number.

It is an amenable number.

51049 is a deficient number, since it is larger than the sum of its proper divisors (791).

51049 is an equidigital number, since it uses as much as digits as its factorization.

51049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 51049 is about 225.9402575904. The cubic root of 51049 is about 37.0961705616.

The spelling of 51049 in words is "fifty-one thousand, forty-nine".