51768914 has 4 divisors (see below), whose sum is σ = 77653374. Its totient is φ = 25884456.

The previous prime is 51768887. The next prime is 51768919. The reversal of 51768914 is 41986715.

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., 34421689 + 17347225 = 5867^2 + 4165^2 .

It is not an unprimeable number, because it can be changed into a prime (51768919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12942227 + ... + 12942230.

Almost surely, 2^51768914 is an apocalyptic number.

51768914 is a deficient number, since it is larger than the sum of its proper divisors (25884460).

51768914 is a wasteful number, since it uses less digits than its factorization.

51768914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25884459.

The product of its digits is 60480, while the sum is 41.

The square root of 51768914 is about 7195.0617787480. The cubic root of 51768914 is about 372.6973900907.

The spelling of 51768914 in words is "fifty-one million, seven hundred sixty-eight thousand, nine hundred fourteen".