51038340 has 48 divisors (see below), whose sum is σ = 143519040. Its totient is φ = 13552000.

The previous prime is 51038333. The next prime is 51038341. The reversal of 51038340 is 4383015.

It is a self number, because there is not a number n which added to its sum of digits gives 51038340.

It is not an unprimeable number, because it can be changed into a prime (51038341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13366 + ... + 16754.

It is an arithmetic number, because the mean of its divisors is an integer number (2989980).

Almost surely, 2^51038340 is an apocalyptic number.

It is an amenable number.

51038340 is an abundant number, since it is smaller than the sum of its proper divisors (92480700).

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

51038340 is a wasteful number, since it uses less digits than its factorization.

51038340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3652 (or 3650 counting only the distinct ones).

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

The square root of 51038340 is about 7144.1122611560. The cubic root of 51038340 is about 370.9358825366.

The spelling of 51038340 in words is "fifty-one million, thirty-eight thousand, three hundred forty".