51061571 has 16 divisors (see below), whose sum is σ = 57315840. Its totient is φ = 45096480.

The previous prime is 51061553. The next prime is 51061579. The reversal of 51061571 is 17516015.

It is not a de Polignac number, because 51061571 - 2¹⁴ = 51045187 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51061571.

It is not an unprimeable number, because it can be changed into a prime (51061579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57785 + ... + 58661.

It is an arithmetic number, because the mean of its divisors is an integer number (3582240).

Almost surely, 2^51061571 is an apocalyptic number.

51061571 is a deficient number, since it is larger than the sum of its proper divisors (6254269).

51061571 is a wasteful number, since it uses less digits than its factorization.

51061571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034.

The product of its (nonzero) digits is 1050, while the sum is 26.

The square root of 51061571 is about 7145.7379604909. The cubic root of 51061571 is about 370.9921533348.

Adding to 51061571 its reverse (17516015), we get a palindrome (68577586).

The spelling of 51061571 in words is "fifty-one million, sixty-one thousand, five hundred seventy-one".