51679898 has 16 divisors (see below), whose sum is σ = 84300264. Its totient is φ = 23662080.

The previous prime is 51679889. The next prime is 51679907. The reversal of 51679898 is 89897615.

It is an interprime number because it is at equal distance from previous prime (51679889) and next prime (51679907).

It can be written as a sum of positive squares in 4 ways, for example, as 51509329 + 170569 = 7177^2 + 413^2 .

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, 19283 + ... + 21798.

Almost surely, 2^51679898 is an apocalyptic number.

51679898 is a deficient number, since it is larger than the sum of its proper divisors (32620366).

51679898 is a wasteful number, since it uses less digits than its factorization.

51679898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41137.

The product of its digits is 1088640, while the sum is 53.

The square root of 51679898 is about 7188.8732079513. The cubic root of 51679898 is about 372.4836513702.

The spelling of 51679898 in words is "fifty-one million, six hundred seventy-nine thousand, eight hundred ninety-eight".