51002147 has 8 divisors (see below), whose sum is σ = 58423296. Its totient is φ = 43614792.

The previous prime is 51002141. The next prime is 51002153. The reversal of 51002147 is 74120015.

It is an interprime number because it is at equal distance from previous prime (51002141) and next prime (51002153).

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 51002147 - 2¹⁰ = 51001123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51002141) 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, 5123 + ... + 11324.

It is an arithmetic number, because the mean of its divisors is an integer number (7302912).

Almost surely, 2^51002147 is an apocalyptic number.

51002147 is a deficient number, since it is larger than the sum of its proper divisors (7421149).

51002147 is a wasteful number, since it uses less digits than its factorization.

51002147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16897.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 51002147 is about 7141.5787470279. The cubic root of 51002147 is about 370.8481807743.

The spelling of 51002147 in words is "fifty-one million, two thousand, one hundred forty-seven".