51065771 has 4 divisors (see below), whose sum is σ = 51082032. Its totient is φ = 51049512.

The previous prime is 51065767. The next prime is 51065779. The reversal of 51065771 is 17756015.

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

It is a cyclic number.

It is not a de Polignac number, because 51065771 - 2² = 51065767 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51065779) 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, 1751 + ... + 10256.

It is an arithmetic number, because the mean of its divisors is an integer number (12770508).

Almost surely, 2^51065771 is an apocalyptic number.

51065771 is a deficient number, since it is larger than the sum of its proper divisors (16261).

51065771 is a wasteful number, since it uses less digits than its factorization.

51065771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16260.

The product of its (nonzero) digits is 7350, while the sum is 32.

The square root of 51065771 is about 7146.0318359212. The cubic root of 51065771 is about 371.0023248741.

The spelling of 51065771 in words is "fifty-one million, sixty-five thousand, seven hundred seventy-one".