51866041 has 4 divisors (see below), whose sum is σ = 53072272. Its totient is φ = 50659812.

The previous prime is 51866027. The next prime is 51866047. The reversal of 51866041 is 14066815.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51866041 - 2¹⁹ = 51341753 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51865994 and 51866012.

It is not an unprimeable number, because it can be changed into a prime (51866047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 603051 + ... + 603136.

It is an arithmetic number, because the mean of its divisors is an integer number (13268068).

Almost surely, 2^51866041 is an apocalyptic number.

It is an amenable number.

51866041 is a deficient number, since it is larger than the sum of its proper divisors (1206231).

51866041 is a wasteful number, since it uses less digits than its factorization.

51866041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1206230.

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 51866041 is about 7201.8081757292. The cubic root of 51866041 is about 372.9303250174.

The spelling of 51866041 in words is "fifty-one million, eight hundred sixty-six thousand, forty-one".