51163340 has 24 divisors (see below), whose sum is σ = 107776032. Its totient is φ = 20401920.

The previous prime is 51163327. The next prime is 51163351. The reversal of 51163340 is 4336115.

It is a happy number.

It is a super-3 number, since 3×51163340³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2945 + ... + 10535.

It is an arithmetic number, because the mean of its divisors is an integer number (4490668).

Almost surely, 2^51163340 is an apocalyptic number.

It is an amenable number.

51163340 is an abundant number, since it is smaller than the sum of its proper divisors (56612692).

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

51163340 is a wasteful number, since it uses less digits than its factorization.

51163340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7937 (or 7935 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 51163340 is about 7152.8553739049. The cubic root of 51163340 is about 371.2384601914.

Adding to 51163340 its reverse (4336115), we get a palindrome (55499455).

The spelling of 51163340 in words is "fifty-one million, one hundred sixty-three thousand, three hundred forty".