51199326 has 48 divisors (see below), whose sum is σ = 117477360. Its totient is φ = 16087680.

The previous prime is 51199303. The next prime is 51199327. The reversal of 51199326 is 62399115.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51199327) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21306 + ... + 23586.

It is an arithmetic number, because the mean of its divisors is an integer number (2447445).

Almost surely, 2^51199326 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51199326, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58738680).

51199326 is an abundant number, since it is smaller than the sum of its proper divisors (66278034).

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

51199326 is a wasteful number, since it uses less digits than its factorization.

51199326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2361 (or 2358 counting only the distinct ones).

The product of its digits is 14580, while the sum is 36.

The square root of 51199326 is about 7155.3704306626. The cubic root of 51199326 is about 371.3254772908.

The spelling of 51199326 in words is "fifty-one million, one hundred ninety-nine thousand, three hundred twenty-six".