51617288255 has 8 divisors (see below), whose sum is σ = 66705418752. Its totient is φ = 38117382048.

The previous prime is 51617288251. The next prime is 51617288269. The reversal of 51617288255 is 55288271615.

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 51617288255 - 2² = 51617288251 is a prime.

It is a super-3 number, since 3×51617288255³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51617288251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397055999 + ... + 397056128.

It is an arithmetic number, because the mean of its divisors is an integer number (8338177344).

Almost surely, 2^51617288255 is an apocalyptic number.

51617288255 is a deficient number, since it is larger than the sum of its proper divisors (15088130497).

51617288255 is a wasteful number, since it uses less digits than its factorization.

51617288255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794112145.

The product of its digits is 1344000, while the sum is 50.

The spelling of 51617288255 in words is "fifty-one billion, six hundred seventeen million, two hundred eighty-eight thousand, two hundred fifty-five".