51308456 has 16 divisors (see below), whose sum is σ = 96280800. Its totient is φ = 25633584.

The previous prime is 51308447. The next prime is 51308459. The reversal of 51308456 is 65480315.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (51308459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15125 + ... + 18203.

It is an arithmetic number, because the mean of its divisors is an integer number (6017550).

Almost surely, 2^51308456 is an apocalyptic number.

It is an amenable number.

51308456 is a deficient number, since it is larger than the sum of its proper divisors (44972344).

51308456 is a wasteful number, since it uses less digits than its factorization.

51308456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5168 (or 5164 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 51308456 is about 7162.9921122391. The cubic root of 51308456 is about 371.5891135239.

The spelling of 51308456 in words is "fifty-one million, three hundred eight thousand, four hundred fifty-six".