51545966 has 8 divisors (see below), whose sum is σ = 78041880. Its totient is φ = 25532008.

The previous prime is 51545947. The next prime is 51545969. The reversal of 51545966 is 66954515.

51545966 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×51545966² = 5313973221746312, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51545969) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 120221 + ... + 120648.

It is an arithmetic number, because the mean of its divisors is an integer number (9755235).

Almost surely, 2^51545966 is an apocalyptic number.

51545966 is a deficient number, since it is larger than the sum of its proper divisors (26495914).

51545966 is a wasteful number, since it uses less digits than its factorization.

51545966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240978.

The product of its digits is 162000, while the sum is 41.

The square root of 51545966 is about 7179.5519358801. The cubic root of 51545966 is about 372.1616006949.

The spelling of 51545966 in words is "fifty-one million, five hundred forty-five thousand, nine hundred sixty-six".