51382285 has 8 divisors (see below), whose sum is σ = 61738776. Its totient is φ = 41052480.

The previous prime is 51382277. The next prime is 51382301. The reversal of 51382285 is 58228315.

It can be written as a sum of positive squares in 4 ways, for example, as 10588516 + 40793769 = 3254^2 + 6387^2 .

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

It is not a de Polignac number, because 51382285 - 2³ = 51382277 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 51382285.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2154 + ... + 10363.

It is an arithmetic number, because the mean of its divisors is an integer number (7717347).

Almost surely, 2^51382285 is an apocalyptic number.

It is an amenable number.

51382285 is a deficient number, since it is larger than the sum of its proper divisors (10356491).

51382285 is a wasteful number, since it uses less digits than its factorization.

51382285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13343.

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

The square root of 51382285 is about 7168.1437625092. The cubic root of 51382285 is about 371.7672576792.

The spelling of 51382285 in words is "fifty-one million, three hundred eighty-two thousand, two hundred eighty-five".