51601486571 has 8 divisors (see below), whose sum is σ = 55406402784. Its totient is φ = 47882074240.

The previous prime is 51601486523. The next prime is 51601486579. The reversal of 51601486571 is 17568410615.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51601486571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51601486579) 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, 21374720 + ... + 21377133.

It is an arithmetic number, because the mean of its divisors is an integer number (6925800348).

Almost surely, 2^51601486571 is an apocalyptic number.

51601486571 is a deficient number, since it is larger than the sum of its proper divisors (3804916213).

51601486571 is a wasteful number, since it uses less digits than its factorization.

51601486571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42751941.

The product of its (nonzero) digits is 201600, while the sum is 44.

The spelling of 51601486571 in words is "fifty-one billion, six hundred one million, four hundred eighty-six thousand, five hundred seventy-one".