51546285 has 72 divisors (see below), whose sum is σ = 105441336. Its totient is φ = 23224320.

The previous prime is 51546283. The next prime is 51546301. The reversal of 51546285 is 58264515.

51546285 is a `hidden beast` number, since 515 + 4 + 62 + 85 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 8892324 + 42653961 = 2982^2 + 6531^2 .

It is not a de Polignac number, because 51546285 - 2¹ = 51546283 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51546283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 213765 + ... + 214005.

It is an arithmetic number, because the mean of its divisors is an integer number (1464463).

Almost surely, 2^51546285 is an apocalyptic number.

It is an amenable number.

51546285 is an abundant number, since it is smaller than the sum of its proper divisors (53895051).

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

51546285 is a wasteful number, since it uses less digits than its factorization.

51546285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363 (or 353 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 51546285 is about 7179.5741517168. The cubic root of 51546285 is about 372.1623684194.

The spelling of 51546285 in words is "fifty-one million, five hundred forty-six thousand, two hundred eighty-five".