51055161 has 4 divisors (see below), whose sum is σ = 68073552. Its totient is φ = 34036772.

The previous prime is 51055159. The next prime is 51055183. The reversal of 51055161 is 16155015.

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 a cyclic number.

It is not a de Polignac number, because 51055161 - 2¹ = 51055159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51055141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8509191 + ... + 8509196.

It is an arithmetic number, because the mean of its divisors is an integer number (17018388).

Almost surely, 2^51055161 is an apocalyptic number.

It is an amenable number.

51055161 is a deficient number, since it is larger than the sum of its proper divisors (17018391).

51055161 is a wasteful number, since it uses less digits than its factorization.

51055161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17018390.

The product of its (nonzero) digits is 750, while the sum is 24.

The square root of 51055161 is about 7145.2894273080. The cubic root of 51055161 is about 370.9766285532.

The spelling of 51055161 in words is "fifty-one million, fifty-five thousand, one hundred sixty-one".