51040569 has 4 divisors (see below), whose sum is σ = 68054096. Its totient is φ = 34027044.

The previous prime is 51040547. The next prime is 51040573. The reversal of 51040569 is 96504015.

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 51040569 - 2¹⁷ = 50909497 is a prime.

It is a super-2 number, since 2×51040569² = 5210279367687522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (51040589) 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, 8506759 + ... + 8506764.

It is an arithmetic number, because the mean of its divisors is an integer number (17013524).

Almost surely, 2^51040569 is an apocalyptic number.

It is an amenable number.

51040569 is a deficient number, since it is larger than the sum of its proper divisors (17013527).

51040569 is a wasteful number, since it uses less digits than its factorization.

51040569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17013526.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 51040569 is about 7144.2682620406. The cubic root of 51040569 is about 370.9412824252.

The spelling of 51040569 in words is "fifty-one million, forty thousand, five hundred sixty-nine".