51085045 has 8 divisors (see below), whose sum is σ = 66875040. Its totient is φ = 37152720.

The previous prime is 51085039. The next prime is 51085061. The reversal of 51085045 is 54058015.

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

It is not a de Polignac number, because 51085045 - 2⁹ = 51084533 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 464355 + ... + 464464.

It is an arithmetic number, because the mean of its divisors is an integer number (8359380).

Almost surely, 2^51085045 is an apocalyptic number.

51085045 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51085045 is a deficient number, since it is larger than the sum of its proper divisors (15789995).

51085045 is a wasteful number, since it uses less digits than its factorization.

51085045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928835.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 51085045 is about 7147.3802893088. The cubic root of 51085045 is about 371.0489954013.

It can be divided in two parts, 5108 and 5045, that added together give a triangular number (10153 = T₁₄₂).

The spelling of 51085045 in words is "fifty-one million, eighty-five thousand, forty-five".