51000187 has 16 divisors (see below), whose sum is σ = 63225792. Its totient is φ = 40135680.

The previous prime is 51000163. The next prime is 51000197. The reversal of 51000187 is 78100015.

It is a cyclic number.

It is not a de Polignac number, because 51000187 - 2¹¹ = 50998139 is a prime.

51000187 is a modest number, since divided by 187 gives 51 as remainder.

It is not an unprimeable number, because it can be changed into a prime (51000127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 348 + ... + 10105.

It is an arithmetic number, because the mean of its divisors is an integer number (3951612).

Almost surely, 2^51000187 is an apocalyptic number.

51000187 is a deficient number, since it is larger than the sum of its proper divisors (12225605).

51000187 is a wasteful number, since it uses less digits than its factorization.

51000187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10518.

The product of its (nonzero) digits is 280, while the sum is 22.

The square root of 51000187 is about 7141.4415211496. The cubic root of 51000187 is about 370.8434301786.

The spelling of 51000187 in words is "fifty-one million, one hundred eighty-seven", and thus it is an aban number.