51122071 has 16 divisors (see below), whose sum is σ = 68640768. Its totient is φ = 36770400.

The previous prime is 51122063. The next prime is 51122117. The reversal of 51122071 is 17022115.

51122071 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 51122071 - 2³ = 51122063 is a prime.

It is a super-2 number, since 2×51122071² = 5226932286658082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51122021) 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 15 ways as a sum of consecutive naturals, for example, 24535 + ... + 26536.

It is an arithmetic number, because the mean of its divisors is an integer number (4290048).

Almost surely, 2^51122071 is an apocalyptic number.

51122071 is a deficient number, since it is larger than the sum of its proper divisors (17518697).

51122071 is a wasteful number, since it uses less digits than its factorization.

51122071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51102.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 51122071 is about 7149.9699999371. The cubic root of 51122071 is about 371.1386181227.

Adding to 51122071 its reverse (17022115), we get a palindrome (68144186).

The spelling of 51122071 in words is "fifty-one million, one hundred twenty-two thousand, seventy-one".