51888249 has 32 divisors (see below), whose sum is σ = 88247040. Its totient is φ = 29517696.

The previous prime is 51888223. The next prime is 51888269. The reversal of 51888249 is 94288815.

It is a happy number.

51888249 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 51888249 - 2⁷ = 51888121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51888209) 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 31 ways as a sum of consecutive naturals, for example, 54909 + ... + 55845.

It is an arithmetic number, because the mean of its divisors is an integer number (2757720).

Almost surely, 2^51888249 is an apocalyptic number.

It is an amenable number.

51888249 is a deficient number, since it is larger than the sum of its proper divisors (36358791).

51888249 is a wasteful number, since it uses less digits than its factorization.

51888249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1246 (or 1240 counting only the distinct ones).

The product of its digits is 184320, while the sum is 45.

The square root of 51888249 is about 7203.3498457315. The cubic root of 51888249 is about 372.9835445210.

The spelling of 51888249 in words is "fifty-one million, eight hundred eighty-eight thousand, two hundred forty-nine".