51506601 has 8 divisors (see below), whose sum is σ = 68708640. Its totient is φ = 34321152.

The previous prime is 51506569. The next prime is 51506621. The reversal of 51506601 is 10660515.

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

It is not a de Polignac number, because 51506601 - 2⁵ = 51506569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51506621) 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, 9865 + ... + 14153.

It is an arithmetic number, because the mean of its divisors is an integer number (8588580).

Almost surely, 2^51506601 is an apocalyptic number.

It is an amenable number.

51506601 is a deficient number, since it is larger than the sum of its proper divisors (17202039).

51506601 is a wasteful number, since it uses less digits than its factorization.

51506601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8295.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 51506601 is about 7176.8099459300. The cubic root of 51506601 is about 372.0668382042.

The spelling of 51506601 in words is "fifty-one million, five hundred six thousand, six hundred one".