51297678 has 16 divisors (see below), whose sum is σ = 113994960. Its totient is φ = 17099208.

The previous prime is 51297677. The next prime is 51297707. The reversal of 51297678 is 87679215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51297671) 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, 474925 + ... + 475032.

It is an arithmetic number, because the mean of its divisors is an integer number (7124685).

Almost surely, 2^51297678 is an apocalyptic number.

51297678 is an abundant number, since it is smaller than the sum of its proper divisors (62697282).

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

51297678 is a wasteful number, since it uses less digits than its factorization.

51297678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949968 (or 949962 counting only the distinct ones).

The product of its digits is 211680, while the sum is 45.

The square root of 51297678 is about 7162.2397334912. The cubic root of 51297678 is about 371.5630926802.

The spelling of 51297678 in words is "fifty-one million, two hundred ninety-seven thousand, six hundred seventy-eight".