51901 has 8 divisors (see below), whose sum is σ = 57024. Its totient is φ = 47040.

The previous prime is 51899. The next prime is 51907. The reversal of 51901 is 10915.

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 51901 - 2¹ = 51899 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 (51907) 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, 696 + ... + 766.

It is an arithmetic number, because the mean of its divisors is an integer number (7128).

2⁵¹⁹⁰¹ is an apocalyptic number.

It is an amenable number.

51901 is a deficient number, since it is larger than the sum of its proper divisors (5123).

51901 is a wasteful number, since it uses less digits than its factorization.

51901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131.

The product of its (nonzero) digits is 45, while the sum is 16.

The square root of 51901 is about 227.8179097437. The cubic root of 51901 is about 37.3014094300.

The spelling of 51901 in words is "fifty-one thousand, nine hundred one".