51604851 has 8 divisors (see below), whose sum is σ = 69438160. Its totient is φ = 34087392.

The previous prime is 51604849. The next prime is 51604853. The reversal of 51604851 is 15840615.

It is an interprime number because it is at equal distance from previous prime (51604849) and next prime (51604853).

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

It is not a de Polignac number, because 51604851 - 2¹ = 51604849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51604853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78580 + ... + 79233.

It is an arithmetic number, because the mean of its divisors is an integer number (8679770).

Almost surely, 2^51604851 is an apocalyptic number.

51604851 is a deficient number, since it is larger than the sum of its proper divisors (17833309).

51604851 is a wasteful number, since it uses less digits than its factorization.

51604851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157925.

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 51604851 is about 7183.6516480130. The cubic root of 51604851 is about 372.3032632269.

It can be divided in two parts, 5160 and 4851, that added together give a triangular number (10011 = T₁₄₁).

The spelling of 51604851 in words is "fifty-one million, six hundred four thousand, eight hundred fifty-one".