51077 has 4 divisors (see below), whose sum is σ = 55020. Its totient is φ = 47136.

The previous prime is 51071. The next prime is 51109. The reversal of 51077 is 77015.

51077 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 226²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7396 + 43681 = 86^2 + 209^2 .

It is a cyclic number.

It is not a de Polignac number, because 51077 - 2⁴ = 51061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51071) 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, 1952 + ... + 1977.

It is an arithmetic number, because the mean of its divisors is an integer number (13755).

2⁵¹⁰⁷⁷ is an apocalyptic number.

It is an amenable number.

51077 is a deficient number, since it is larger than the sum of its proper divisors (3943).

51077 is a wasteful number, since it uses less digits than its factorization.

51077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3942.

The product of its (nonzero) digits is 245, while the sum is 20.

The square root of 51077 is about 226.0022123786. The cubic root of 51077 is about 37.1029516472.

The spelling of 51077 in words is "fifty-one thousand, seventy-seven".