51466187 has 2 divisors, whose sum is σ = 51466188. Its totient is φ = 51466186.

The previous prime is 51466139. The next prime is 51466199. The reversal of 51466187 is 78166415.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51466187 - 2¹² = 51462091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51466187.

It is not a weakly prime, because it can be changed into another prime (51466087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25733093 + 25733094.

It is an arithmetic number, because the mean of its divisors is an integer number (25733094).

Almost surely, 2^51466187 is an apocalyptic number.

51466187 is a deficient number, since it is larger than the sum of its proper divisors (1).

51466187 is an equidigital number, since it uses as much as digits as its factorization.

51466187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 38.

The square root of 51466187 is about 7173.9937970422. The cubic root of 51466187 is about 371.9695002358.

The spelling of 51466187 in words is "fifty-one million, four hundred sixty-six thousand, one hundred eighty-seven".