51189376 has 32 divisors (see below), whose sum is σ = 116549280. Its totient is φ = 21937920.

The previous prime is 51189373. The next prime is 51189377. The reversal of 51189376 is 67398115.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (51189371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27670 + ... + 29461.

It is an arithmetic number, because the mean of its divisors is an integer number (3642165).

Almost surely, 2^51189376 is an apocalyptic number.

51189376 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

51189376 is an abundant number, since it is smaller than the sum of its proper divisors (65359904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51189376 is an equidigital number, since it uses as much as digits as its factorization.

51189376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57152 (or 57140 counting only the distinct ones).

The product of its digits is 45360, while the sum is 40.

The square root of 51189376 is about 7154.6751149161. The cubic root of 51189376 is about 371.3014214542.

The spelling of 51189376 in words is "fifty-one million, one hundred eighty-nine thousand, three hundred seventy-six".