51568970 has 8 divisors (see below), whose sum is σ = 92824164. Its totient is φ = 20627584.

The previous prime is 51568969. The next prime is 51568987. The reversal of 51568970 is 7986515.

It can be written as a sum of positive squares in 2 ways, for example, as 51566761 + 2209 = 7181^2 + 47^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2578439 + ... + 2578458.

Almost surely, 2^51568970 is an apocalyptic number.

51568970 is a deficient number, since it is larger than the sum of its proper divisors (41255194).

51568970 is a wasteful number, since it uses less digits than its factorization.

51568970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5156904.

The product of its (nonzero) digits is 75600, while the sum is 41.

The square root of 51568970 is about 7181.1538070146. The cubic root of 51568970 is about 372.2169553804.

The spelling of 51568970 in words is "fifty-one million, five hundred sixty-eight thousand, nine hundred seventy".