51655283587 has 4 divisors (see below), whose sum is σ = 51687549576. Its totient is φ = 51623017600.

The previous prime is 51655283573. The next prime is 51655283593. The reversal of 51655283587 is 78538255615.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78538255615 = 5 ⋅15707651123.

It is a cyclic number.

It is not a de Polignac number, because 51655283587 - 2²⁷ = 51521065859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51655283287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16130593 + ... + 16133794.

It is an arithmetic number, because the mean of its divisors is an integer number (12921887394).

Almost surely, 2^51655283587 is an apocalyptic number.

51655283587 is a deficient number, since it is larger than the sum of its proper divisors (32265989).

51655283587 is a wasteful number, since it uses less digits than its factorization.

51655283587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32265988.

The product of its digits is 10080000, while the sum is 55.

The spelling of 51655283587 in words is "fifty-one billion, six hundred fifty-five million, two hundred eighty-three thousand, five hundred eighty-seven".