51821276 has 12 divisors (see below), whose sum is σ = 97663272. Its totient is φ = 23917488.

The previous prime is 51821239. The next prime is 51821309. The reversal of 51821276 is 67212815.

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, 498230 + ... + 498333.

It is an arithmetic number, because the mean of its divisors is an integer number (8138606).

Almost surely, 2^51821276 is an apocalyptic number.

It is an amenable number.

51821276 is a deficient number, since it is larger than the sum of its proper divisors (45841996).

51821276 is a wasteful number, since it uses less digits than its factorization.

51821276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996580 (or 996578 counting only the distinct ones).

The product of its digits is 6720, while the sum is 32.

The square root of 51821276 is about 7198.6996047897. The cubic root of 51821276 is about 372.8230034710.

It can be divided in two parts, 5 and 1821276, that added together give a palindrome (1821281).

The spelling of 51821276 in words is "fifty-one million, eight hundred twenty-one thousand, two hundred seventy-six".