51047501 has 8 divisors (see below), whose sum is σ = 53075904. Its totient is φ = 49056480.

The previous prime is 51047497. The next prime is 51047519. The reversal of 51047501 is 10574015.

51047501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 51047501 - 2² = 51047497 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 (51047551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6545 + ... + 12038.

It is an arithmetic number, because the mean of its divisors is an integer number (6634488).

Almost surely, 2^51047501 is an apocalyptic number.

It is an amenable number.

51047501 is a deficient number, since it is larger than the sum of its proper divisors (2028403).

51047501 is a wasteful number, since it uses less digits than its factorization.

51047501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18691.

The product of its (nonzero) digits is 700, while the sum is 23.

The square root of 51047501 is about 7144.7533897259. The cubic root of 51047501 is about 370.9580746137.

The spelling of 51047501 in words is "fifty-one million, forty-seven thousand, five hundred one".