51766340 has 24 divisors (see below), whose sum is σ = 109076352. Its totient is φ = 20636640.

The previous prime is 51766339. The next prime is 51766381. The reversal of 51766340 is 4366715.

It is a junction number, because it is equal to n+sod(n) for n = 51766297 and 51766306.

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 in 7 ways as a sum of consecutive naturals, for example, 1925 + ... + 10355.

It is an arithmetic number, because the mean of its divisors is an integer number (4544848).

Almost surely, 2^51766340 is an apocalyptic number.

It is an amenable number.

51766340 is an abundant number, since it is smaller than the sum of its proper divisors (57310012).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51766340 is a wasteful number, since it uses less digits than its factorization.

51766340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8747 (or 8745 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 51766340 is about 7194.8829038421. The cubic root of 51766340 is about 372.6912130312.

The spelling of 51766340 in words is "fifty-one million, seven hundred sixty-six thousand, three hundred forty".