51466149 has 24 divisors (see below), whose sum is σ = 87260160. Its totient is φ = 28613088.

The previous prime is 51466139. The next prime is 51466187. The reversal of 51466149 is 94166415.

51466149 is a `hidden beast` number, since 51 + 466 + 149 = 666.

51466149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51466149 - 2⁴ = 51466133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51466139) 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 23 ways as a sum of consecutive naturals, for example, 8709 + ... + 13370.

It is an arithmetic number, because the mean of its divisors is an integer number (3635840).

Almost surely, 2^51466149 is an apocalyptic number.

It is an amenable number.

51466149 is a deficient number, since it is larger than the sum of its proper divisors (35794011).

51466149 is a wasteful number, since it uses less digits than its factorization.

51466149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22129 (or 22126 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 51466149 is about 7173.9911485867. The cubic root of 51466149 is about 371.9694086880.

It can be divided in two parts, 51466 and 149, that added together give a palindrome (51615).

The spelling of 51466149 in words is "fifty-one million, four hundred sixty-six thousand, one hundred forty-nine".