51299149 has 16 divisors (see below), whose sum is σ = 59489856. Its totient is φ = 43718400.

The previous prime is 51299147. The next prime is 51299167. The reversal of 51299149 is 94199215.

51299149 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 51299149 - 2¹ = 51299147 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51299147) 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 15 ways as a sum of consecutive naturals, for example, 73894 + ... + 74584.

It is an arithmetic number, because the mean of its divisors is an integer number (3718116).

Almost surely, 2^51299149 is an apocalyptic number.

It is an amenable number.

51299149 is a deficient number, since it is larger than the sum of its proper divisors (8190707).

51299149 is a wasteful number, since it uses less digits than its factorization.

51299149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1116.

The product of its digits is 29160, while the sum is 40.

The square root of 51299149 is about 7162.3424240956. The cubic root of 51299149 is about 371.5666442645.

The spelling of 51299149 in words is "fifty-one million, two hundred ninety-nine thousand, one hundred forty-nine".