51342218 has 8 divisors (see below), whose sum is σ = 81066720. Its totient is φ = 24319980.

The previous prime is 51342217. The next prime is 51342253. The reversal of 51342218 is 81224315.

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

It is not an unprimeable number, because it can be changed into a prime (51342217) 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, 675518 + ... + 675593.

It is an arithmetic number, because the mean of its divisors is an integer number (10133340).

Almost surely, 2^51342218 is an apocalyptic number.

51342218 is a deficient number, since it is larger than the sum of its proper divisors (29724502).

51342218 is a wasteful number, since it uses less digits than its factorization.

51342218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351132.

The product of its digits is 1920, while the sum is 26.

The square root of 51342218 is about 7165.3484213959. The cubic root of 51342218 is about 371.6706000330.

The spelling of 51342218 in words is "fifty-one million, three hundred forty-two thousand, two hundred eighteen".