51008278 has 8 divisors (see below), whose sum is σ = 77255568. Its totient is φ = 25256424.

The previous prime is 51008263. The next prime is 51008281. The reversal of 51008278 is 87280015.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 123601 + ... + 124012.

It is an arithmetic number, because the mean of its divisors is an integer number (9656946).

Almost surely, 2^51008278 is an apocalyptic number.

51008278 is a deficient number, since it is larger than the sum of its proper divisors (26247290).

51008278 is a wasteful number, since it uses less digits than its factorization.

51008278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247718.

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 51008278 is about 7142.0079809533. The cubic root of 51008278 is about 370.8630401429.

The spelling of 51008278 in words is "fifty-one million, eight thousand, two hundred seventy-eight".