51156208 has 20 divisors (see below), whose sum is σ = 104332360. Its totient is φ = 24231744.

The previous prime is 51156181. The next prime is 51156241. The reversal of 51156208 is 80265115.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 83835 + ... + 84442.

It is an arithmetic number, because the mean of its divisors is an integer number (5216618).

Almost surely, 2^51156208 is an apocalyptic number.

It is an amenable number.

51156208 is an abundant number, since it is smaller than the sum of its proper divisors (53176152).

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

51156208 is a wasteful number, since it uses less digits than its factorization.

51156208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168304 (or 168298 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 28.

The square root of 51156208 is about 7152.3568143655. The cubic root of 51156208 is about 371.2212095863.

The spelling of 51156208 in words is "fifty-one million, one hundred fifty-six thousand, two hundred eight".