51124911 has 4 divisors (see below), whose sum is σ = 68166552. Its totient is φ = 34083272.

The previous prime is 51124907. The next prime is 51124919. The reversal of 51124911 is 11942115.

It is a happy number.

51124911 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 51124911 - 2² = 51124907 is a prime.

It is a super-2 number, since 2×51124911² = 5227513049515842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51124919) 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, 8520816 + ... + 8520821.

It is an arithmetic number, because the mean of its divisors is an integer number (17041638).

Almost surely, 2^51124911 is an apocalyptic number.

51124911 is a deficient number, since it is larger than the sum of its proper divisors (17041641).

51124911 is a wasteful number, since it uses less digits than its factorization.

51124911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17041640.

The product of its digits is 360, while the sum is 24.

The square root of 51124911 is about 7150.1685994108. The cubic root of 51124911 is about 371.1454906543.

The spelling of 51124911 in words is "fifty-one million, one hundred twenty-four thousand, nine hundred eleven".