51516976 has 40 divisors (see below), whose sum is σ = 115654304. Its totient is φ = 21772800.

The previous prime is 51516973. The next prime is 51516977. The reversal of 51516976 is 67961515.

It is not an unprimeable number, because it can be changed into a prime (51516973) 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, 5026 + ... + 11326.

Almost surely, 2^51516976 is an apocalyptic number.

51516976 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51516976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57827152).

51516976 is an abundant number, since it is smaller than the sum of its proper divisors (64137328).

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

51516976 is a wasteful number, since it uses less digits than its factorization.

51516976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6389 (or 6383 counting only the distinct ones).

The product of its digits is 56700, while the sum is 40.

The square root of 51516976 is about 7177.5327237150. The cubic root of 51516976 is about 372.0918183958.

The spelling of 51516976 in words is "fifty-one million, five hundred sixteen thousand, nine hundred seventy-six".