51150066 has 32 divisors (see below), whose sum is σ = 112658688. Its totient is φ = 15353040.

The previous prime is 51150049. The next prime is 51150079. The reversal of 51150066 is 66005115.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3441 + ... + 10683.

It is an arithmetic number, because the mean of its divisors is an integer number (3520584).

Almost surely, 2^51150066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51150066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56329344).

51150066 is an abundant number, since it is smaller than the sum of its proper divisors (61508622).

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

51150066 is a wasteful number, since it uses less digits than its factorization.

51150066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7366.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 51150066 is about 7151.9274325178. The cubic root of 51150066 is about 371.2063522697.

It can be divided in two parts, 511500 and 66, that added together give a triangular number (511566 = T₁₀₁₁).

The spelling of 51150066 in words is "fifty-one million, one hundred fifty thousand, sixty-six".