51393066 has 16 divisors (see below), whose sum is σ = 104234688. Its totient is φ = 16889600.

The previous prime is 51393053. The next prime is 51393073. The reversal of 51393066 is 66039315.

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, 59895 + ... + 60746.

It is an arithmetic number, because the mean of its divisors is an integer number (6514668).

Almost surely, 2^51393066 is an apocalyptic number.

51393066 is an abundant number, since it is smaller than the sum of its proper divisors (52841622).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51393066 is a wasteful number, since it uses less digits than its factorization.

51393066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120717.

The product of its (nonzero) digits is 14580, while the sum is 33.

The square root of 51393066 is about 7168.8957308640. The cubic root of 51393066 is about 371.7932571880.

The spelling of 51393066 in words is "fifty-one million, three hundred ninety-three thousand, sixty-six".