51986254 has 8 divisors (see below), whose sum is σ = 78415560. Its totient is φ = 25847736.

The previous prime is 51986243. The next prime is 51986267. The reversal of 51986254 is 45268915.

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, 72249 + ... + 72964.

It is an arithmetic number, because the mean of its divisors is an integer number (9801945).

Almost surely, 2^51986254 is an apocalyptic number.

51986254 is a deficient number, since it is larger than the sum of its proper divisors (26429306).

51986254 is a wasteful number, since it uses less digits than its factorization.

51986254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145394.

The product of its digits is 86400, while the sum is 40.

The square root of 51986254 is about 7210.1493743195. The cubic root of 51986254 is about 373.2182236176.

The spelling of 51986254 in words is "fifty-one million, nine hundred eighty-six thousand, two hundred fifty-four".