51468818 has 4 divisors (see below), whose sum is σ = 77203230. Its totient is φ = 25734408.

The previous prime is 51468793. The next prime is 51468821. The reversal of 51468818 is 81886415.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 45333289 + 6135529 = 6733^2 + 2477^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12867203 + ... + 12867206.

Almost surely, 2^51468818 is an apocalyptic number.

51468818 is a deficient number, since it is larger than the sum of its proper divisors (25734412).

51468818 is a wasteful number, since it uses less digits than its factorization.

51468818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25734411.

The product of its digits is 61440, while the sum is 41.

The square root of 51468818 is about 7174.1771653619. The cubic root of 51468818 is about 371.9758386050.

The spelling of 51468818 in words is "fifty-one million, four hundred sixty-eight thousand, eight hundred eighteen".