51065011 has 4 divisors (see below), whose sum is σ = 51228472. Its totient is φ = 50901552.

The previous prime is 51064999. The next prime is 51065041. The reversal of 51065011 is 11056015.

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 51065011 - 2⁹ = 51064499 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51065011.

It is not an unprimeable number, because it can be changed into a prime (51065041) 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, 81261 + ... + 81886.

It is an arithmetic number, because the mean of its divisors is an integer number (12807118).

Almost surely, 2^51065011 is an apocalyptic number.

51065011 is a deficient number, since it is larger than the sum of its proper divisors (163461).

51065011 is a wasteful number, since it uses less digits than its factorization.

51065011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163460.

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 51065011 is about 7145.9786593580. The cubic root of 51065011 is about 371.0004843512. Note that the first 3 decimals are identical.

The spelling of 51065011 in words is "fifty-one million, sixty-five thousand, eleven".