51618268 has 12 divisors (see below), whose sum is σ = 97280680. Its totient is φ = 23823792.

The previous prime is 51618263. The next prime is 51618271. The reversal of 51618268 is 86281615.

51618268 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51618263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 496278 + ... + 496381.

Almost surely, 2^51618268 is an apocalyptic number.

It is an amenable number.

51618268 is a deficient number, since it is larger than the sum of its proper divisors (45662412).

51618268 is a wasteful number, since it uses less digits than its factorization.

51618268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992676 (or 992674 counting only the distinct ones).

The product of its digits is 23040, while the sum is 37.

The square root of 51618268 is about 7184.5854438513. The cubic root of 51618268 is about 372.3355260855.

The spelling of 51618268 in words is "fifty-one million, six hundred eighteen thousand, two hundred sixty-eight".