51902208 has 90 divisors (see below), whose sum is σ = 154824824. Its totient is φ = 17293824.

The previous prime is 51902177. The next prime is 51902209. The reversal of 51902208 is 80220915.

51902208 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51902209) 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 9 ways as a sum of consecutive naturals, for example, 19485 + ... + 21987.

Almost surely, 2^51902208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51902208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77412412).

51902208 is an abundant number, since it is smaller than the sum of its proper divisors (102922616).

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

51902208 is an equidigital number, since it uses as much as digits as its factorization.

51902208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2531 (or 2508 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 51902208 is about 7204.3187047770. The cubic root of 51902208 is about 373.0169882556.

The spelling of 51902208 in words is "fifty-one million, nine hundred two thousand, two hundred eight".