51120511 has 4 divisors (see below), whose sum is σ = 55052872. Its totient is φ = 47188152.

The previous prime is 51120463. The next prime is 51120527. The reversal of 51120511 is 11502115.

51120511 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 51120511 - 2⁷ = 51120383 is a prime.

It is a super-2 number, since 2×51120511² = 5226613289802242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51120551) 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, 1966161 + ... + 1966186.

It is an arithmetic number, because the mean of its divisors is an integer number (13763218).

Almost surely, 2^51120511 is an apocalyptic number.

51120511 is a deficient number, since it is larger than the sum of its proper divisors (3932361).

51120511 is a wasteful number, since it uses less digits than its factorization.

51120511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3932360.

The product of its (nonzero) digits is 50, while the sum is 16.

The square root of 51120511 is about 7149.8609077380. The cubic root of 51120511 is about 371.1348429617.

Adding to 51120511 its reverse (11502115), we get a palindrome (62622626).

The spelling of 51120511 in words is "fifty-one million, one hundred twenty thousand, five hundred eleven".