51545452285 has 24 divisors (see below), whose sum is σ = 62893363104. Its totient is φ = 40552861440.

The previous prime is 51545452267. The next prime is 51545452333. The reversal of 51545452285 is 58225454515.

It is a happy number.

It is not a de Polignac number, because 51545452285 - 2²¹ = 51543355133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8360614 + ... + 8366776.

It is an arithmetic number, because the mean of its divisors is an integer number (2620556796).

Almost surely, 2^51545452285 is an apocalyptic number.

It is an amenable number.

51545452285 is a deficient number, since it is larger than the sum of its proper divisors (11347910819).

51545452285 is a wasteful number, since it uses less digits than its factorization.

51545452285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6525 (or 6412 counting only the distinct ones).

The product of its digits is 1600000, while the sum is 46.

The spelling of 51545452285 in words is "fifty-one billion, five hundred forty-five million, four hundred fifty-two thousand, two hundred eighty-five".