51998662 has 8 divisors (see below), whose sum is σ = 78514992. Its totient is φ = 25827000.

The previous prime is 51998651. The next prime is 51998677. The reversal of 51998662 is 26689915.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85789 + ... + 86392.

It is an arithmetic number, because the mean of its divisors is an integer number (9814374).

Almost surely, 2^51998662 is an apocalyptic number.

51998662 is a deficient number, since it is larger than the sum of its proper divisors (26516330).

51998662 is a wasteful number, since it uses less digits than its factorization.

51998662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172334.

The product of its digits is 233280, while the sum is 46.

The square root of 51998662 is about 7211.0097767234. The cubic root of 51998662 is about 373.2479143082.

It can be divided in two parts, 5199 and 8662, that added together give a triangular number (13861 = T₁₆₆).

The spelling of 51998662 in words is "fifty-one million, nine hundred ninety-eight thousand, six hundred sixty-two".