51974208 has 168 divisors, whose sum is σ = 175296576. Its totient is φ = 14515200.

The previous prime is 51974161. The next prime is 51974213. The reversal of 51974208 is 80247915.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 82053 + ... + 82683.

It is an arithmetic number, because the mean of its divisors is an integer number (1043432).

Almost surely, 2^51974208 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 51974208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87648288).

51974208 is an abundant number, since it is smaller than the sum of its proper divisors (123322368).

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

51974208 is a wasteful number, since it uses less digits than its factorization.

51974208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673 (or 660 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 51974208 is about 7209.3139756845. The cubic root of 51974208 is about 373.1893946249.

The spelling of 51974208 in words is "fifty-one million, nine hundred seventy-four thousand, two hundred eight".