50961 has 4 divisors (see below), whose sum is σ = 67952. Its totient is φ = 33972.

The previous prime is 50957. The next prime is 50969. The reversal of 50961 is 16905.

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 not a de Polignac number, because 50961 - 2² = 50957 is a prime.

It is a D-number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (50969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8491 + ... + 8496.

It is an arithmetic number, because the mean of its divisors is an integer number (16988).

2⁵⁰⁹⁶¹ is an apocalyptic number.

It is an amenable number.

50961 is a deficient number, since it is larger than the sum of its proper divisors (16991).

50961 is a wasteful number, since it uses less digits than its factorization.

50961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16990.

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 50961 is about 225.7454318475. The cubic root of 50961 is about 37.0748424219.

The spelling of 50961 in words is "fifty thousand, nine hundred sixty-one".