51680392 has 16 divisors (see below), whose sum is σ = 96978960. Its totient is φ = 25819344.

The previous prime is 51680371. The next prime is 51680393. The reversal of 51680392 is 29308615.

It is not an unprimeable number, because it can be changed into a prime (51680393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14623 + ... + 17809.

It is an arithmetic number, because the mean of its divisors is an integer number (6061185).

Almost surely, 2^51680392 is an apocalyptic number.

It is an amenable number.

51680392 is a deficient number, since it is larger than the sum of its proper divisors (45298568).

51680392 is a wasteful number, since it uses less digits than its factorization.

51680392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5220 (or 5216 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 51680392 is about 7188.9075665222. The cubic root of 51680392 is about 372.4848382040.

It can be divided in two parts, 516803 and 92, that multiplied together give a triangular number (47545876 = T₉₇₅₁).

The spelling of 51680392 in words is "fifty-one million, six hundred eighty thousand, three hundred ninety-two".