51368680 has 32 divisors (see below), whose sum is σ = 126087840. Its totient is φ = 18679360.

The previous prime is 51368677. The next prime is 51368689. The reversal of 51368680 is 8686315.

It is not an unprimeable number, because it can be changed into a prime (51368689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57934 + ... + 58813.

It is an arithmetic number, because the mean of its divisors is an integer number (3940245).

Almost surely, 2^51368680 is an apocalyptic number.

It is an amenable number.

51368680 is an abundant number, since it is smaller than the sum of its proper divisors (74719160).

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

51368680 is a wasteful number, since it uses less digits than its factorization.

51368680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116769 (or 116765 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 51368680 is about 7167.1947092290. The cubic root of 51368680 is about 371.7344426080.

It can be divided in two parts, 5 and 1368680, that added together give a triangular number (1368685 = T₁₆₅₄).

The spelling of 51368680 in words is "fifty-one million, three hundred sixty-eight thousand, six hundred eighty".