51698366 has 8 divisors (see below), whose sum is σ = 78639984. Its totient is φ = 25485040.

The previous prime is 51698363. The next prime is 51698393. The reversal of 51698366 is 66389615.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51698363) 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, 181895 + ... + 182178.

It is an arithmetic number, because the mean of its divisors is an integer number (9829998).

Almost surely, 2^51698366 is an apocalyptic number.

51698366 is a deficient number, since it is larger than the sum of its proper divisors (26941618).

51698366 is a wasteful number, since it uses less digits than its factorization.

51698366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364146.

The product of its digits is 233280, while the sum is 44.

The square root of 51698366 is about 7190.1575782454. The cubic root of 51698366 is about 372.5280155498.

The spelling of 51698366 in words is "fifty-one million, six hundred ninety-eight thousand, three hundred sixty-six".