51566105 has 8 divisors (see below), whose sum is σ = 62727432. Its totient is φ = 40687488.

The previous prime is 51566101. The next prime is 51566107. The reversal of 51566105 is 50166515.

It can be written as a sum of positive squares in 4 ways, for example, as 1042441 + 50523664 = 1021^2 + 7108^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 51566105 - 2² = 51566101 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51566101) 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, 70274 + ... + 71003.

It is an arithmetic number, because the mean of its divisors is an integer number (7840929).

Almost surely, 2^51566105 is an apocalyptic number.

It is an amenable number.

51566105 is a deficient number, since it is larger than the sum of its proper divisors (11161327).

51566105 is a wasteful number, since it uses less digits than its factorization.

51566105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141355.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 51566105 is about 7180.9543237651. The cubic root of 51566105 is about 372.2100622085.

The spelling of 51566105 in words is "fifty-one million, five hundred sixty-six thousand, one hundred five".