51500161501 has 8 divisors (see below), whose sum is σ = 51902090240. Its totient is φ = 51098681952.

The previous prime is 51500161451. The next prime is 51500161507. The reversal of 51500161501 is 10516100515.

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 51500161501 - 2¹⁵ = 51500128733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51500161507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119761 + ... + 342553.

It is an arithmetic number, because the mean of its divisors is an integer number (6487761280).

Almost surely, 2^51500161501 is an apocalyptic number.

It is an amenable number.

51500161501 is a deficient number, since it is larger than the sum of its proper divisors (401928739).

51500161501 is a wasteful number, since it uses less digits than its factorization.

51500161501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224595.

The product of its (nonzero) digits is 750, while the sum is 25.

The spelling of 51500161501 in words is "fifty-one billion, five hundred million, one hundred sixty-one thousand, five hundred one".