51144011 has 4 divisors (see below), whose sum is σ = 51348024. Its totient is φ = 50940000.

The previous prime is 51143987. The next prime is 51144013. The reversal of 51144011 is 11044115.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11044115 = 5 ⋅2208823.

It is a cyclic number.

It is not a de Polignac number, because 51144011 - 2⁶ = 51143947 is a prime.

It is a super-4 number, since 4×51144011⁴ (a number of 32 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3, 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51144013) 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, 101630 + ... + 102131.

It is an arithmetic number, because the mean of its divisors is an integer number (12837006).

Almost surely, 2^51144011 is an apocalyptic number.

51144011 is a deficient number, since it is larger than the sum of its proper divisors (204013).

51144011 is a wasteful number, since it uses less digits than its factorization.

51144011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204012.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 51144011 is about 7151.5041075287. The cubic root of 51144011 is about 371.1917042394.

Adding to 51144011 its reverse (11044115), we get a palindrome (62188126).

The spelling of 51144011 in words is "fifty-one million, one hundred forty-four thousand, eleven".