51965829 has 12 divisors (see below), whose sum is σ = 75453196. Its totient is φ = 34463232.

The previous prime is 51965791. The next prime is 51965857. The reversal of 51965829 is 92856915.

It can be written as a sum of positive squares in 2 ways, for example, as 31472100 + 20493729 = 5610^2 + 4527^2 .

It is not a de Polignac number, because 51965829 - 2⁷ = 51965701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51965899) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13222 + ... + 16695.

Almost surely, 2^51965829 is an apocalyptic number.

It is an amenable number.

51965829 is a deficient number, since it is larger than the sum of its proper divisors (23487367).

51965829 is a wasteful number, since it uses less digits than its factorization.

51965829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30116 (or 30113 counting only the distinct ones).

The product of its digits is 194400, while the sum is 45.

The square root of 51965829 is about 7208.7328290068. The cubic root of 51965829 is about 373.1693390236.

It can be divided in two parts, 5196 and 5829, that added together give a square (11025 = 105²).

The spelling of 51965829 in words is "fifty-one million, nine hundred sixty-five thousand, eight hundred twenty-nine".