51360212 has 12 divisors (see below), whose sum is σ = 90083700. Its totient is φ = 25622016.

The previous prime is 51360203. The next prime is 51360223. The reversal of 51360212 is 21206315.

It can be written as a sum of positive squares in 2 ways, for example, as 44568976 + 6791236 = 6676^2 + 2606^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12503 + ... + 16094.

It is an arithmetic number, because the mean of its divisors is an integer number (7506975).

Almost surely, 2^51360212 is an apocalyptic number.

It is an amenable number.

51360212 is a deficient number, since it is larger than the sum of its proper divisors (38723488).

51360212 is a wasteful number, since it uses less digits than its factorization.

51360212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29050 (or 29048 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 51360212 is about 7166.6039377100. The cubic root of 51360212 is about 371.7140149840.

Adding to 51360212 its reverse (21206315), we get a palindrome (72566527).

The spelling of 51360212 in words is "fifty-one million, three hundred sixty thousand, two hundred twelve".