51485205 has 8 divisors (see below), whose sum is σ = 82376352. Its totient is φ = 27458768.

The previous prime is 51485171. The next prime is 51485209. The reversal of 51485205 is 50258415.

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

It is a cyclic number.

It is not a de Polignac number, because 51485205 - 2⁸ = 51484949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51485209) 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 7 ways as a sum of consecutive naturals, for example, 1716159 + ... + 1716188.

It is an arithmetic number, because the mean of its divisors is an integer number (10297044).

Almost surely, 2^51485205 is an apocalyptic number.

It is an amenable number.

51485205 is a deficient number, since it is larger than the sum of its proper divisors (30891147).

51485205 is a wasteful number, since it uses less digits than its factorization.

51485205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3432355.

The product of its (nonzero) digits is 8000, while the sum is 30.

The square root of 51485205 is about 7175.3191566647. The cubic root of 51485205 is about 372.0153118336.

The spelling of 51485205 in words is "fifty-one million, four hundred eighty-five thousand, two hundred five".