51156571 has 2 divisors, whose sum is σ = 51156572. Its totient is φ = 51156570.

The previous prime is 51156559. The next prime is 51156629. The reversal of 51156571 is 17565115.

51156571 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 51156571 - 2¹⁵ = 51123803 is a prime.

It is equal to p_3066268 and since 51156571 and 3066268 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (51156271) 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 as a sum of consecutive naturals, namely, 25578285 + 25578286.

It is an arithmetic number, because the mean of its divisors is an integer number (25578286).

Almost surely, 2^51156571 is an apocalyptic number.

51156571 is a deficient number, since it is larger than the sum of its proper divisors (1).

51156571 is an equidigital number, since it uses as much as digits as its factorization.

51156571 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5250, while the sum is 31.

The square root of 51156571 is about 7152.3821905712. The cubic root of 51156571 is about 371.2220876353. Note that the first 3 decimals are identical.

The spelling of 51156571 in words is "fifty-one million, one hundred fifty-six thousand, five hundred seventy-one".