51719976 has 192 divisors, whose sum is σ = 184204800. Its totient is φ = 12700800.

The previous prime is 51719971. The next prime is 51719981. The reversal of 51719976 is 67991715.

It is an interprime number because it is at equal distance from previous prime (51719971) and next prime (51719981).

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (51719971) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 105091 + ... + 105581.

It is an arithmetic number, because the mean of its divisors is an integer number (959400).

Almost surely, 2^51719976 is an apocalyptic number.

51719976 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 51719976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92102400).

51719976 is an abundant number, since it is smaller than the sum of its proper divisors (132484824).

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

51719976 is a wasteful number, since it uses less digits than its factorization.

51719976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540 (or 533 counting only the distinct ones).

The product of its digits is 119070, while the sum is 45.

The square root of 51719976 is about 7191.6601699469. The cubic root of 51719976 is about 372.5799140888.

It can be divided in two parts, 51 and 719976, that added together give a palindrome (720027).

The spelling of 51719976 in words is "fifty-one million, seven hundred nineteen thousand, nine hundred seventy-six".