51803485 has 4 divisors (see below), whose sum is σ = 62164188. Its totient is φ = 41442784.

The previous prime is 51803473. The next prime is 51803503. The reversal of 51803485 is 58430815.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38415204 + 13388281 = 6198^2 + 3659^2 .

It is a cyclic number.

It is not a de Polignac number, because 51803485 - 2⁹ = 51802973 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51803485.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5180344 + ... + 5180353.

It is an arithmetic number, because the mean of its divisors is an integer number (15541047).

Almost surely, 2^51803485 is an apocalyptic number.

It is an amenable number.

51803485 is a deficient number, since it is larger than the sum of its proper divisors (10360703).

51803485 is a wasteful number, since it uses less digits than its factorization.

51803485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10360702.

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 51803485 is about 7197.4637894192. The cubic root of 51803485 is about 372.7803333957.

The spelling of 51803485 in words is "fifty-one million, eight hundred three thousand, four hundred eighty-five".