51151566 has 8 divisors (see below), whose sum is σ = 102303144. Its totient is φ = 17050520.

The previous prime is 51151561. The next prime is 51151567. The reversal of 51151566 is 66515115.

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

51151566 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51151561) by changing a digit.

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, 4262625 + ... + 4262636.

It is an arithmetic number, because the mean of its divisors is an integer number (12787893).

Almost surely, 2^51151566 is an apocalyptic number.

51151566 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

51151566 is a wasteful number, since it uses less digits than its factorization.

51151566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8525266.

The product of its digits is 4500, while the sum is 30.

The square root of 51151566 is about 7152.0322985848. The cubic root of 51151566 is about 371.2099808352.

The spelling of 51151566 in words is "fifty-one million, one hundred fifty-one thousand, five hundred sixty-six".