51570066 has 32 divisors (see below), whose sum is σ = 108898560. Its totient is φ = 16235856.

The previous prime is 51570053. The next prime is 51570067. The reversal of 51570066 is 66007515.

It is not an unprimeable number, because it can be changed into a prime (51570067) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61945 + ... + 62771.

It is an arithmetic number, because the mean of its divisors is an integer number (3403080).

Almost surely, 2^51570066 is an apocalyptic number.

51570066 is an abundant number, since it is smaller than the sum of its proper divisors (57328494).

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

51570066 is a wasteful number, since it uses less digits than its factorization.

51570066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 51570066 is about 7181.2301174659. The cubic root of 51570066 is about 372.2195922819.

The spelling of 51570066 in words is "fifty-one million, five hundred seventy thousand, sixty-six".