51888389 has 16 divisors (see below), whose sum is σ = 61464576. Its totient is φ = 42865200.

The previous prime is 51888383. The next prime is 51888407. The reversal of 51888389 is 98388815.

It is a de Polignac number, because none of the positive numbers 2^k-51888389 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 (51888383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105434 + ... + 105924.

It is an arithmetic number, because the mean of its divisors is an integer number (3841536).

Almost surely, 2^51888389 is an apocalyptic number.

It is an amenable number.

51888389 is a deficient number, since it is larger than the sum of its proper divisors (9576187).

51888389 is a wasteful number, since it uses less digits than its factorization.

51888389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016.

The product of its digits is 552960, while the sum is 50.

The square root of 51888389 is about 7203.3595634259. The cubic root of 51888389 is about 372.9838799704.

The spelling of 51888389 in words is "fifty-one million, eight hundred eighty-eight thousand, three hundred eighty-nine".