51413340 has 48 divisors (see below), whose sum is σ = 157046400. Its totient is φ = 12463680.

The previous prime is 51413333. The next prime is 51413363. The reversal of 51413340 is 4331415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38290 + ... + 39609.

It is an arithmetic number, because the mean of its divisors is an integer number (3271800).

Almost surely, 2^51413340 is an apocalyptic number.

It is an amenable number.

51413340 is an abundant number, since it is smaller than the sum of its proper divisors (105633060).

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

51413340 is a wasteful number, since it uses less digits than its factorization.

51413340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77922 (or 77920 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 51413340 is about 7170.3096167460. The cubic root of 51413340 is about 371.8421402126.

Adding to 51413340 its reverse (4331415), we get a palindrome (55744755).

The spelling of 51413340 in words is "fifty-one million, four hundred thirteen thousand, three hundred forty".