51679017 has 36 divisors (see below), whose sum is σ = 82303884. Its totient is φ = 31224960.

The previous prime is 51678989. The next prime is 51679021. The reversal of 51679017 is 71097615.

It can be written as a sum of positive squares in 6 ways, for example, as 33454656 + 18224361 = 5784^2 + 4269^2 .

It is not a de Polignac number, because 51679017 - 2⁷ = 51678889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51679027) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 92503 + ... + 93059.

It is an arithmetic number, because the mean of its divisors is an integer number (2286219).

Almost surely, 2^51679017 is an apocalyptic number.

It is an amenable number.

51679017 is a deficient number, since it is larger than the sum of its proper divisors (30624867).

51679017 is a wasteful number, since it uses less digits than its factorization.

51679017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650 (or 634 counting only the distinct ones).

The product of its (nonzero) digits is 13230, while the sum is 36.

The square root of 51679017 is about 7188.8119324406. The cubic root of 51679017 is about 372.4815347512.

The spelling of 51679017 in words is "fifty-one million, six hundred seventy-nine thousand, seventeen".