51323208 has 16 divisors (see below), whose sum is σ = 128308080. Its totient is φ = 17107728.

The previous prime is 51323203. The next prime is 51323213. The reversal of 51323208 is 80232315.

It is an interprime number because it is at equal distance from previous prime (51323203) and next prime (51323213).

It is a super-2 number, since 2×51323208² = 5268143358822528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 2138467 = 51323208 / (5 + 1 + 3 + 2 + 3 + 2 + 0 + 8).

It is not an unprimeable number, because it can be changed into a prime (51323203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1069210 + ... + 1069257.

It is an arithmetic number, because the mean of its divisors is an integer number (8019255).

Almost surely, 2^51323208 is an apocalyptic number.

It is an amenable number.

51323208 is an abundant number, since it is smaller than the sum of its proper divisors (76984872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51323208 is a wasteful number, since it uses less digits than its factorization.

51323208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2138476 (or 2138472 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 51323208 is about 7164.0217755113. The cubic root of 51323208 is about 371.6247227116.

The spelling of 51323208 in words is "fifty-one million, three hundred twenty-three thousand, two hundred eight".