51408862 has 4 divisors (see below), whose sum is σ = 77113296. Its totient is φ = 25704430.

The previous prime is 51408829. The next prime is 51408871. The reversal of 51408862 is 26880415.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 26880415 = 5 ⋅5376083.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12852214 + ... + 12852217.

It is an arithmetic number, because the mean of its divisors is an integer number (19278324).

Almost surely, 2^51408862 is an apocalyptic number.

51408862 is a deficient number, since it is larger than the sum of its proper divisors (25704434).

51408862 is a wasteful number, since it uses less digits than its factorization.

51408862 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25704433.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 51408862 is about 7169.9973500692. The cubic root of 51408862 is about 371.8313443280.

The spelling of 51408862 in words is "fifty-one million, four hundred eight thousand, eight hundred sixty-two".