51556670 has 16 divisors (see below), whose sum is σ = 101238768. Its totient is φ = 18747840.

The previous prime is 51556667. The next prime is 51556717. The reversal of 51556670 is 7665515.

51556670 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 51556670.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234239 + ... + 234458.

It is an arithmetic number, because the mean of its divisors is an integer number (6327423).

Almost surely, 2^51556670 is an apocalyptic number.

51556670 is a deficient number, since it is larger than the sum of its proper divisors (49682098).

51556670 is a wasteful number, since it uses less digits than its factorization.

51556670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468715.

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 51556670 is about 7180.2973476034. The cubic root of 51556670 is about 372.1873598530.

The spelling of 51556670 in words is "fifty-one million, five hundred fifty-six thousand, six hundred seventy".