51571105 has 8 divisors (see below), whose sum is σ = 62498664. Its totient is φ = 40848000.

The previous prime is 51571099. The next prime is 51571109. The reversal of 51571105 is 50117515.

It can be written as a sum of positive squares in 4 ways, for example, as 4112784 + 47458321 = 2028^2 + 6889^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51571105 - 2⁷ = 51570977 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 51571105.

It is not an unprimeable number, because it can be changed into a prime (51571109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50556 + ... + 51565.

It is an arithmetic number, because the mean of its divisors is an integer number (7812333).

Almost surely, 2^51571105 is an apocalyptic number.

It is an amenable number.

51571105 is a deficient number, since it is larger than the sum of its proper divisors (10927559).

51571105 is a wasteful number, since it uses less digits than its factorization.

51571105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102227.

The product of its (nonzero) digits is 875, while the sum is 25.

The square root of 51571105 is about 7181.3024584681. The cubic root of 51571105 is about 372.2220920109. Note that the first 3 decimals are identical.

The spelling of 51571105 in words is "fifty-one million, five hundred seventy-one thousand, one hundred five".