51408946 has 16 divisors (see below), whose sum is σ = 81668160. Its totient is φ = 24202800.

The previous prime is 51408937. The next prime is 51408953. The reversal of 51408946 is 64980415.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2296 + ... + 10396.

It is an arithmetic number, because the mean of its divisors is an integer number (5104260).

Almost surely, 2^51408946 is an apocalyptic number.

51408946 is a deficient number, since it is larger than the sum of its proper divisors (30259214).

51408946 is a wasteful number, since it uses less digits than its factorization.

51408946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8289.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 51408946 is about 7170.0032078096. The cubic root of 51408946 is about 371.8315468470.

The spelling of 51408946 in words is "fifty-one million, four hundred eight thousand, nine hundred forty-six".