51814982 has 4 divisors (see below), whose sum is σ = 77722476. Its totient is φ = 25907490.

The previous prime is 51814979. The next prime is 51814993. The reversal of 51814982 is 28941815.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12953744 + ... + 12953747.

It is an arithmetic number, because the mean of its divisors is an integer number (19430619).

Almost surely, 2^51814982 is an apocalyptic number.

51814982 is a deficient number, since it is larger than the sum of its proper divisors (25907494).

51814982 is a wasteful number, since it uses less digits than its factorization.

51814982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25907493.

The product of its digits is 23040, while the sum is 38.

The square root of 51814982 is about 7198.2624292255. The cubic root of 51814982 is about 372.8079090081.

The spelling of 51814982 in words is "fifty-one million, eight hundred fourteen thousand, nine hundred eighty-two".