51030187 has 8 divisors (see below), whose sum is σ = 55102320. Its totient is φ = 46979040.

The previous prime is 51030179. The next prime is 51030191. The reversal of 51030187 is 78103015.

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 51030187 - 2³ = 51030179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51030137) 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, 12 + ... + 10102.

It is an arithmetic number, because the mean of its divisors is an integer number (6887790).

Almost surely, 2^51030187 is an apocalyptic number.

51030187 is a deficient number, since it is larger than the sum of its proper divisors (4072133).

51030187 is a wasteful number, since it uses less digits than its factorization.

51030187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10493.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 51030187 is about 7143.5416286321. The cubic root of 51030187 is about 370.9161300571.

The spelling of 51030187 in words is "fifty-one million, thirty thousand, one hundred eighty-seven".