51649041 has 8 divisors (see below), whose sum is σ = 69534400. Its totient is φ = 34098192.

The previous prime is 51649019. The next prime is 51649051. The reversal of 51649041 is 14094615.

It is a happy number.

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

It is not a de Polignac number, because 51649041 - 2⁹ = 51648529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51649051) 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, 83266 + ... + 83883.

It is an arithmetic number, because the mean of its divisors is an integer number (8691800).

Almost surely, 2^51649041 is an apocalyptic number.

It is an amenable number.

51649041 is a deficient number, since it is larger than the sum of its proper divisors (17885359).

51649041 is a wasteful number, since it uses less digits than its factorization.

51649041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167255.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 51649041 is about 7186.7267236204. The cubic root of 51649041 is about 372.4095025116.

The spelling of 51649041 in words is "fifty-one million, six hundred forty-nine thousand, forty-one".