51140211 has 4 divisors (see below), whose sum is σ = 68186952. Its totient is φ = 34093472.

The previous prime is 51140203. The next prime is 51140213. The reversal of 51140211 is 11204115.

It is a happy number.

51140211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 51140211 - 2³ = 51140203 is a prime.

It is a super-2 number, since 2×51140211² = 5230642362249042, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51140213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8523366 + ... + 8523371.

It is an arithmetic number, because the mean of its divisors is an integer number (17046738).

Almost surely, 2^51140211 is an apocalyptic number.

51140211 is a deficient number, since it is larger than the sum of its proper divisors (17046741).

51140211 is a wasteful number, since it uses less digits than its factorization.

51140211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17046740.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 51140211 is about 7151.2384242172. The cubic root of 51140211 is about 371.1825108305.

Adding to 51140211 its reverse (11204115), we get a palindrome (62344326).

The spelling of 51140211 in words is "fifty-one million, one hundred forty thousand, two hundred eleven".