51616701 has 6 divisors (see below), whose sum is σ = 74557470. Its totient is φ = 34411128.

The previous prime is 51616679. The next prime is 51616703. The reversal of 51616701 is 10761615.

It can be written as a sum of positive squares in only one way, i.e., 39879225 + 11737476 = 6315^2 + 3426^2 .

It is not a de Polignac number, because 51616701 - 2⁹ = 51616189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51616703) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2867586 + ... + 2867603.

It is an arithmetic number, because the mean of its divisors is an integer number (12426245).

Almost surely, 2^51616701 is an apocalyptic number.

It is an amenable number.

51616701 is a deficient number, since it is larger than the sum of its proper divisors (22940769).

51616701 is a wasteful number, since it uses less digits than its factorization.

51616701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5735195 (or 5735192 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 51616701 is about 7184.4763901067. The cubic root of 51616701 is about 372.3317583259.

The spelling of 51616701 in words is "fifty-one million, six hundred sixteen thousand, seven hundred one".