51393760 has 48 divisors (see below), whose sum is σ = 132460272. Its totient is φ = 18688000.

The previous prime is 51393751. The next prime is 51393761. The reversal of 51393760 is 6739315.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51393761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12841 + ... + 16360.

It is an arithmetic number, because the mean of its divisors is an integer number (2759589).

Almost surely, 2^51393760 is an apocalyptic number.

It is an amenable number.

51393760 is an abundant number, since it is smaller than the sum of its proper divisors (81066512).

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

51393760 is a wasteful number, since it uses less digits than its factorization.

51393760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29227 (or 29219 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 34.

The square root of 51393760 is about 7168.9441342502. The cubic root of 51393760 is about 371.7949307170.

The spelling of 51393760 in words is "fifty-one million, three hundred ninety-three thousand, seven hundred sixty".